My reverse/low servo pin is about 4.33" long, seems it is the early 400/4l80e pin. According to this company: http://www.wittrans.com/c-713-4L80E.aspx?pagenum=48 (D34913F).
It's the shortest pin there is, they go up to 4.861" , pretty much 1/2" longer. Should I lengthen it anyways, even if it is not the root problem?
I don't want to hi-jack here, but if someone has the same problem this info will probably help them. Plus, the guys that are in this thread are hopefully subscribed to this topic already.