My 2 cents- i have 14" bars w/ 1" risers, mestz tires, brand new front end, Prog. 412 HD shocks. I have noticed a slight weave on faster, sweeping turns when I hit even a slight bump in the pavement. I was under the impression that this was normal and it really hasn't concerned me. I have also noticed the front end wags slightly if I catch a good bit of wind on the highway going 85 or over. Seems a looser grip and a little bit of throttle has cured it though. (38 psi fornt and back)

 

IMO, this is the single most important and beneficial upgrade. literally night and day difference - you'll be smilin