Hi, I recently bought a bianchi pista as my first track/fixed gear bike. I usually use it to commute so i can get to school/buy groceries...etc... I added a front brake and new handlebars but opted to keep everything else stock. Its been two weeks since I got it and lately I've been feeling slight popping in my knees as well as tightness in my thighs and knees. Ive come to the conclusion that the gear ratio is probably too high. Anyone have any recommendations as to what I could do to make it easier on my knees and thighs, seeing that this IS my first fixed gear. Should I change the front chain ring or change the cog in the back. What is a recommended ratio for my pista that will make my current setup a little bit easier on the knees?