I'm a hair under 6'1", and my frame - Kink Apex - is a 20.5" TT (its a 2008, I think the TT is 20.5", the '09s are 20.75"). Either way... I'm starting to think its a little short for my size. It doesn't feel too small, but I've whacked my knees pretty good on the handlebars twice now. Would I be better off with something that has a longer TT? Something like a 21" or 21.5"? What else would it impact? Would it give me better leverage for hops and manuals?