Steve,

Thank you very much. I will dive into the modulator and see what happens.

Is the control pressure linkage part of the throttle linkage?

I've worked on a number of old Chrysler products that use a mechanical throttle pressure linkage that controls the shift point (throttle pressure versus governor pressure), and the kickdown. They are rather easy to adjust.

I'll play with both adjustments. Hopefully I can get acceptable shifts.

Joshua Skinner