I recently swapped to a TH400/NP208 after my 700R4 went out. The 400/208 was of unknown origin/ condition (but it looked as though it had been sitting a while) so I had the 400 rebuilt before going in, I left the 208 alone. After installation, when I pulled the plugs on the 208 to change the fluid I found a small white plastic L-shaped piece in the bottom . I figured it was a shift guide of some sort, but decided to see how things worked without it. Things seemed fine for a while, but recently it has started slipping out of 2H during abrubt stops. The shift lever does not move inside the cab and the linkage is connected tightly. In order to get it to move again I have to put the trans in N, shift into 4L, put it into gear and move a little, then shift back into 2H and everything's fine. It doesn't do this on every hard stop, just occasionally. The body/ engine/ transmission mounts seem to be good. I have tried adjusting the t-case linkage a couple of times and even leaving a little slop in it, but the intermittent problem seems to be unaffected. So I guess the first question is, what is wrong with my t-case ? Secondly, what should I do about it? I'm a college student, so money and time are a concern. Unfortunately, I can't just swap in a 203/205 like I want to. I'm guessing that adjusting the linkage isn't going to fix it, huh? I still have the 27 spline 208 from my 700R4 (despite 216K miles it worked great when pulled). So, should I buy a rebuild kit and rebuild the 32 spline 208? Swap input shafts and run the 208 from my old 700R4? Or fix whatever is wrong with the 32 spline 208 and call it done (don't know if the parts are even available individually, but everything else about it seems fine)? Thanks in advance . Links to write-ups or pictures on how to do all this crap would be greatly appreciated too .