Well, just because you have new shift forks doesn't mean squat.
You need to have Terry Haines install the beefed up 3rd gear synchros in it. 3rd gear synchros are one of the WEAKEST links in the tranny aside from the POS open diff, which I'm guessing you have in there as well. So I wouild look at getting an LSD, be it Quaife or Torsen in there while you've go it at Terry's.
