I've heard that the aftermarket front sprockets vibrate worse than the factory ones is their any truth to this. I'm going to be changing my sprockets and chain after the new year. I only want to go +2 in the rear with the factory teeth count in the front. I also want to change to a 520 RK chain. I was going to do -1/+2 but everybody talks about the bikes front end coming up and I don't care for that. I don't ride the interstates, I mainly ride back and forth to work about 5 miles and do my running around on it with the occasional back road ride. I don't want to do anything that is going to cause harmonic vibration in the trans, this is my only way to work. Just looking to pep up the bike in the low and midrange without running up the RPMs to high.