I've run into a problem with my BURB. I switched to an 02 OS in the TCM as it made my 3-4 shift MUCH better Vs the 01 OS, but I encountered a problem where after the TCM had adapted and fully learned I would occasionally get a hard click sound on the 3-2 downshift similiar to the noise of an electric shift transfer case when it goes into 4 low. I also would get a hard clunk in reverse if I gave it any throttle like it was binding up. I tried 3 different versions of the same OS and they all had the same problems. I switched back to the 01 OS and the 3-2 shift is great now and no noises in reverse at all, but I'm back to a semi harsh 3-4 shift that many have on built ALLISON's. Has anybody else ran into this kind of problem and found a correction for it? I don't think it's anything internally wrong since the problem follows the OS in the TCM and not there all the time. I'm half way tempted to pull the tranny back out and install a wave plate in the C-2 to see if that helps the 3-4 shift, but the 02 OS just drove better all around with my lowered shift points(the problem was there with completely stock shift points as well though). Any help is GREATLY appreciated.
