Hi, I am having a problem with my 1991 4Runner, 4wd, sr 5, V6 transmission. The shifter has been popping out of first gear so today I went to the dealer and got a couple of parts that I thought would fix the problem . I put in a new bushing at the base of the shift lever and a new rubber seat that went into the transmission housing. When I took the shifter out from the transmission and cleaned it up I noticed that on the shift lever above the shaped metal "bulb" what seemed to be a lot of broken hard rubber or plastic pieces. I just cleaned it up, then removed the old seat from the housing and it was worn but intact, not broken into little pieces like I told it would be. So when I look at the parts drawing from the dealer I don't see any replacement part for whatever caused the broken plastic pieces i found on the shift lever itself. Putting it back together, it popped out of gear again so I know something is still wrong. Hope someone here can help with this problem and give me some advice.