I ran mine box stock at West Coast last night and the truck felt ok, I still need to get it dialed in a little (4.5 550 can Ballistic, 12/62, 30k/5k, 35/30 AE oil, 2.0/1.5 sways) The slippers wouldn't even last a full 5 minute heat for me (indoor clay surface), and that was with an HT pad on the outer, vented slipper hub, etc. I talked to a guy who ran one, he mentioned to try double nutting the locknut on the slipper spring as the stock one has a tendency to back off. I tried this, still didn't really help, slipper pads glazed over about midway through the 2nd qualifier, and that was with tightening the slipper spring as tight as I could get it, then adding a second locknut.

I think this issue is due to a couple things, possibly a tolerancing issue on the spring, spring washer, thread depth on the upper diff shaft, etc. I think the stock locknut bottoms out on the threads of the upper diff shaft before the spring reaches coil bind. I could play around with it and measure, etc, but my time is more valuable than that - the clutch basket is on order. Looking forward to trying it, and interested to see what AE comes up with to fix this, it definitely is an issue I'd like to see fixed.