I recently purchased a new F/S bike. I've owned plenty in the past and don't recall this as a common reoccuring problem. The end of my crankarm hits the ground what seems like an inordinate amount of times, every ride. i have adjusted my sag to the point I feel like I'm riding a hardtail. Even inflated my tires a little more. Also I use egg beater pedals, to increase clearance ratio. Lastly, I run a 175mm crankarm length, since I'm 6'1" and have a 34 1/2 inseam. If I run shorter crankarms will this make a differance and if I did change will I give up anything in performance, cadence, power, etc. Any other suggestions. Thanks for your help.