I think whatcha got posted is just fine...that is a "typical" situation on this old junk where one issue always leads to even more!
And it made us do our homework, you were able to work through the process and not shotgun it pointing fingers at the wrong root cause!
With so few IH-related folks dealing with these boxes (or at least talking about it!), there are not many opportunities for working through problems like this! And while they are "similar" to other slushbox designs, they do have their own particular problematic areas (due to lack of maintenance) regarding the shift sequence/timing and the combination vacuum/electric controls system for kickdown. Much more difficult to diagnose/deal with than regards a tf 727!