Kick down and change up on A500 42RH

My 42RH is July 1991. Pleased to report that with the Sonnax valves fitted I wasn't getting any creep. It sounds as though I am best off going back to the other valve body, enjoying the low RPM cruise and part throttle kickdown and forgetting about the early WOT down shifts. Having just had the car dyno tuned I'm hoping for some decent MPG.