I really don't think that is the problem as I have ran the buggy diffs for quite a while and took 3rd at the Vietnam Championship with the buggy diffs in and the 2080 hong nor pipe and the 4 shoe losi clutch, same fuel everything else the same and I didn't have that issue before. The 2080 hong nor pipe had the double bend like the 41005 nova header. I am pretty sure that the buggy diffs are some of the cause but I also know the pipe is the main cause just really want as much info on the pipe as I can to see if I can change headers to help compensate. Putting the truggy diff back in is an option but it is last resort as you cant win a race if you can't finish it, look at the recent ROAR nats and who didn't finish. I have NEVER finished an event with a truggy diff in, last year I replaced with buggy as there were no more truggy diffs in Vietnam ( I went through 5 sets) put in my spare buggy diff and have had ZERO diff failures since. So I really don't want to change back unless I absolutely have to. But thanks for your two cents. I just have not had luck with the losi rear diff. I even made a video and sent it to a team losi driver the ENTIRE build and he said it was perfect, and said to reshim if needed, I did reshim and it didn't last 15 minutes. I made it through 2 heats and it failed in my final heat