Thanks Rob. That's also a possibility. Since it only comes off if i launch over 4K, maybe ill buy a 2 step and set it at 3800 lol. Or dial the converter down some. Just don't want to have to send it back to the trans shop again.

 

If it's throwing the belt then something isn't right, address that don't just advoid it.

 

For me, a piece of flat steel bar stock and a caliper worked better for diagnosing belt misalignment than my fancy laser tool.

 

I agree, the flat bar has it's place.

I made a special calibration tool for my laser to make sure it is dead nuts. I use the laser to check pulley depth and a straight edge to check for plane alignment.

If you know how, the laser can also check plane, but the straight edge can often be easier.

 

OP,

I believe I commented in another of your threads where you had stated that the company who did the install on your blower was not happy with the alignment so the used all-thread studs for the alternator mount. That comment alone tells me you have some major alignment issues.

You need to start over. Address the pulley alignment (depth and plane) first. Once that is perfect, move your focus to addressing anything that can flex. Once everything is locked down in perfect position, you can address the tensioner and belt types/brand.