I just thought of something else. The Gryphon manual says your MAX RPM must be at least 150 above your WOT shift points or you might experience erratic shifting.
Somewhere, in what's left of my feeble brain,
I seem to remember Bill saying this figure should actually be 300 (or was it 400?) RPM. I know my WOT shift points are in the 4900-5000 range and my MAX RPM is at 5400 (I don't race and I don't want to balloon the Torque Converter, so my values are probably lower than yours).
Anyway, you might check these values too.
- Jack