At about 2300 miles today my TBA developed a vibration. It starts at about 55 and progressively gets worse up to about 70. Over 75 it's pretty smooth again... only problem is the speed limit is 55. The vibration isn't something that will shake you off the bike... but you can really feel it in your seat and in your hands (especially your hands). I swear you cant hang on to the bike for ten minutes before your hands and arms go numb. Does anyone have any idea what the heck is going on?

'06 TBA - Black, AI and Snorkel removed, K&N Drop In, Gutted Stock Pipes, 145/42, 2 turns out.