I took my t-case apart in search of a odd noise i suspected was coming from there, all looks good. No metal shavings no worn teeth. What parts do you guys running these see failing first. Bearings, Sleeve bearings? My problem is im running Chevy 4L60E, downey adapter to Toyota topshift, im getting this violent noise coming from the t- case when letting off the gas a moderate speeds. I thought maybe my case was bad, so i found another one just to swap in and see if the noise would be there, thats the one i took apart and everything seemed to be up to par, well needless to say same noise. Is there a chance that both my cases have a worn common part that failed. The downey adapter plate is supposed to hold this set of bearings, and i swear when i let off the gas they slip forward just a hair causing this odd noise at high coasting speeds. Any thoughts or anyone running this same combination out there have this problem.