Hey all I'm new to the forum and to the biker community and I got a problem I need some insight on. A couple weeks ago I bought a 2007 Sportster 1200 Roadster with 2800 miles on it. I now have about 3100 miles on it and have ran it thru 3 or 4 tanks of fuel already. I can't seem to get any better than 36mpg and I ride this bike pretty easily since I'm new to riding period. I dont hot rod it anywhere I just use it to commute back and forth to work. I travel about 20 miles round trip to work and it's mainly highway at about 65-70 miles per hour. The dealer put a fresh oil change and new air filter on it when they received the bike on a trade in and other than that its stock. I thought about throwing a set of plugs on it but according to my OM it's not ready for plugs yet and I don't see how the plugs can ruin my gas milage that badly if the bike is running fine. Any insight or tips on the problem would be great. Thanks in advance!