I tossed in an old VB I had that I am afraid to use. I put it in with no park rod and adjusted the shifter and everything worked. It started in both park and neutral and it adjusted right for high gear. I then swapped the 904 park rod onto my known good VB from my 727(that worked for 16 years, 8 of that with this shifter). Installed it, and it doesn't work. Is it possible this trans has the wrong park rod?

The VB I used that I got to adjust(with no park rod) has a different looking rooster comb than the other 2 VBs. I tried to swap it over and it doesn't work on what I assume are the newer VBs. It has a clearance issue with a plate on another part of the VB.