I've got a vibration that just showed up recently. It feels like it's coming from the front end but not 100% positive. Just recently had the tires balanced and roars red and with how bad the roads are right now I'm wondering if a weight fell off and I've got a wheel unbalanced now. It's going to go back in this week to have then checked again. One thing I've noticed though is it only seems to happen when under throttle. Engine runs smooth, starts great, no smoke, no stumble in rpms. Have good stabile rail pressure and boost. I'm going to check driveshaft u-joints and axle shaft joints but you guys have any other ideas that I should check out?