I did away with the top-of -valvecover valves from the 81D arrangement, reconnected the setup and regained proper vacuum control. vacuum varied as it should: more throttle less vacuum.Still nice smooth shifts,but shift points were wrong. Adjusted the pressure cable and now the transmission is just fine. I want to thank you for your contribution to resolving the longstanding problem with this car. I am not convinced that an ordinary transmission shop would have the expertise to have done this job.Thank you,
Willie(Poor Soul)