I too, have experienced the frustration with noisy lifters. I own a 2009 FLHTCUSE4, purchased 06/09. I understand the 110s deliver more noise than other engines. When I first made my purchase, I did not notice any noise that sounded abnormal. The first part of May, I took a 1300 mile solo road trip to Big Bend National Park. Between Sonora, TX and Fort Stockton, TX I was battling a terrible headwind. The posted speed limit on I-10 in that area is 80 mph. So, I am seeing 2800 to 3000 rpm. I began noticing an unusually loud noise in the engine. I had no apparent performance issues, although the headwind made that difficult to confirm. I made it to Fort Stockton, checked into a motel and called the dealership where I bought the bike. I've been doing business with this dealership for several years, but this is the first bike I have purchased from them (the reason is another story entirely). I described the noise I was hearing and the fact that I had battled the headwind for several hours to the Service Manager. For those of you unfamiliar with this part of Texas, Fort Stockton is about 300 miles from the nearest dealer. The SM offered the opinion that is sounds like it got a little hot. He asked the obvious questions regarding performance, oil pressure, mileage, etc., and suggested I let it sit overnight, fire it up in the morning and reassess. The next morning, at initial startup and idle, it sounded normal. However, once I got on the road and the oil had a chance to get good and hot, I heard what I would describe as noisy lifters. The noise was not loud enough to make me overly concerned, but they were noisier than usual. I elected to finish my trip and did so without mechanical incident. In the Big Bend area, cell phone coverage is out of the question. I feel it appropriate to insert here the best way I have found to describe that area. "I have traveled the road to the middle of nowhere and was fortunate enough to emerge from the other side." Anyway, back to the lifter experience. Once I made it back to the DFW Metroplex, I took the bike to the dealership. They listened to the noise and agreed that it was not normal to them either. We all agreed that the noise appeared to be coming from the front head in the top end. They tore it down and replaced all the lifters. Once I got it back, I noticed it still being louder than it was when I purchased the bike. I took it back to the dealership, let the SM and Tech listen to it again. We compared the noise to three other 110" engines going through the shop for various and unrelated issues. One was in for the 1k service, another for the 10k service. In listening to the noise comparing mine to the other 110s, there was not a significant difference. The SM got HD Tech Support on the phone. The Tech Support resolution was since there were no engine codes pointing to a problem, they felt there was nothing wrong and I should ride it. I agreed to continue to ride it until something occurred which pointed to a direct problem, but I wanted the SM to be thinking about one question I had. That question was, "Why am I now hearing this noise and it was never there before?" The following Sunday, I had the bike out for a local day trip. After about 50 miles I was disgusted with it and took it home and parked it in the garage. The next day (Monday), I had it right back at the dealership. The SM listened to it again and I reminded him that I was still looking for the answer to my question. "Why have I not heard this before now?" He agreed to have the Tech tear it down again to inspect everything to ensure nothing had occurred since they replaced the lifters. I got a call from the SM this past Thursday. He informed me that they had inspected the top end and everything looked normal. He instructed the Tech to tear it down further, even though he had no support from Harley or from his local management. What they found was that the flywheel was 12 thousandths out, causing scoring of the pistons, cylinder walls and cams. There was evidence this caused overheating by looking at the rings and cylinder walls. He said Harley is sending a new engine for them to install. In my opinion, the SM went above and beyond what is currently the standard for troubleshooting this problem. I feel he did this as a result of the relationship I have built with the dealership over the years. He had confidence in me that I knew my bike and that I was not trying to scam Harley out of something. My point is, you know your bike better than anyone! Build that relationship with the people at your local dealership. I have seen many posts referring to them as "stealerships". Based on what I've read on the posts, which is only one side of the story, I would have to agree. The dealership that has offered me what I feel is outstanding service is Texas Harley Davidson in Bedford, TX. They are a great group and they have earned my loyalty. Sorry for the long post and I hope someone gets something from it they can use.