Vibration on decel

[One_Bad_TA]

I have an m6 with a 9". Yukon locker with 4.56's. I have all umi suspension parts, torque arm, torque arm relocation mount, sfc, lca's, phb, rear sway bar sittin on stranos. I used to have a posi unit but kept breaking them so I switched to a locker. Ever since I put this locker in I've had a couple problems. I get a vibration under deceleration from 60+ mph. Also when I do a burnout now I get a lot of wheel hop. With the posi unit I never had these problems. Could this just be the nature of the locker? I did have a problem with my rear torque arm mount. The rear bolts backed out and eventually came out after I tightened the shit out of them. I have not replaced this yet because the car is sitting in storage. I'm guessing this could be my problem. But anyone else that has a locker, do you have any vibration or wheel hop problems?
Thanks

[homickb]

I had this type of problem with vibration, and for me it was just that my pinion angle was wrong with my adjustable torque arm. I fixed it and it was happy motoring after

[Supershafts]

I agree the angle is just a bit to far