onefastviking

I have spoken with Sachs Motorsports, it's really not a Sachs problem, they aren't defective. I can pretty much guess what happened with yours since all the failures happen the same way. Harsh decelleration, usually a missed shift although a variety of other ways it can happen, then the car seems ok but usually starts with a weird driveline vibration and then usually on a high torque upshift like to 4th under full power it goes K-boomie with out any real warning. Am I close ?
You also are on real sticky tires with a high locking diff, probably lightweight flywheel, and seems to be many times a higher than stock friction clutch disc.
Those tend to be the circumstances most seem to have that have seen this issue which makes sense once you figure out what happens.

Rick DeMan

Last I spoke to Stan from G-box, he was talking about a NEW PP they sourced to stop that problem in the BoxS and 996....Maybe check that out..and call Stan...

onefastviking

A few people are already making PP's with stronger straps, one is already mentioned here that will modify/replace your straps on your PP of choice. I think it's more important to know how it happens and to try to prevent that. By design when the PP goes it could be saving your motor. The real answer may be to use a weaker clutch disc, but most people don't want to do that because that will give up some possible performance.