I have been having a problem with chain adjustments..seems I have to adjust my chain every 600-1000 miles....Today durning my adjustment I noticed something strange. My chain was loose to point where it was touching exhaust but if I spun wheel around it got to a tight spot where it tightened up.. what causes this???? I am a aggressive rider and I read that factory front sprocket is 15t rear is 42t. I have also read that best setup is a 16t 44t which changes over all ration from 2:63 to 2:93... does anyone have this setup? how do you like it? hows it cruising down highway at 80mph? and with the aggressive riding should I got 530, 520, or stay with the 525 chain... all opinions are greatly appreciated!!!!