Ken, what you experienced is NOT normal or acceptable, but you need to be prepared for the old "1 quart in a thousand miles is normal" BS Harley has been using for decades. Hopefully your dealer service manager will ignore that BS and just do what's necessary to fix your problem. If I followed your post properly, you added 2.5 quarts in approximately 3700 miles (or 2.5 quarts in 2700 miles if you meant you first checked at 2500 miles on the odometer, not 2500 miles into the trip). If 3700 miles that would be about 1500 miles per quart, if 2700 miles that would be 1000 miles per quart. Neither would be acceptable of course, but I thought I should warn you about that old 1000 per quart is OK story Harley likes to peddle. Good luck, and I hope they do what's right.
Jerry