Spoke too soon on Spit hesitation fix

[jw@mail09.mitre.org (Joe Whalley)]

It seems that my Spitfire now has an intermittent hesitation on acceleration.
After cleaning the needle and replacing the dashpot oil, a short drive showed
no problem. I went out a few hours later and it suddenly became worse than
before - almost total engine stoppage when pressing on the gas - any speed, any
gear. Nursing it along for a few miles and suddenly the problem went away. The
diaphragm looked good, no holes or tears.

I'm really confused now. 
Joe