Topcat1952

Hopefully there are 3 pdf files attached to this that you'll find very interesting. While I don't have any exact experience with this symptom you're thought that it is in the servo area is very logical and would be my first choice. I'd also take a close look at the plate shown in figure 83 on page 29-48 and it's mating surfaces just in case something weird is going on there. Good luck.