Today was my first day at the track since I installed a 1 piece DS and 4.10's. I have a small vibration that starts at about 100mph so I figure I need to adjust my pinion angle. Since I already have BMR non adjustable LCA's, I figured I'd get an adjustable UCA. I see Jegs has an adjustable Lakewood UCA for $100. Has anybody used this and if so what is your experience?