I have an 05 SE 103, had mine changed over to the new hydraulic style at 21m, good thing I did, the shoes were ready to blow apart. I had it done at my favorite Indy shop, dropped it off that morning, picked it up that afternoon. Huge difference for me perosnally,very quiet in the cam area now, always thought all that racket was just part of the Harley experience, not!!. You could go gear drive and never worry about it again, I thought about it, was all set to buy the parts, and My Indy guy talked me out of it, he had put gear drive in his a few month before, and was changing back, said he didn't like the noise it produced, louder in hotter weather. You will find those that love it, and those who do not, bottom line is what do you want.