Hi again, just to report on my engine testing:

1. While tuning the low end, i felt it was running too rich at first since it was spewing oil from the muffler and stopping when glo plug was removed but when i leaned it out (air bleed screw), the rpm's increased as expected but it was too fast to be called an 'idle'. Also it was idling even though the carby was fully closed!! Wonder what was happening there?? I did check for air leaks but didnt find any. Any fool froof way to check for leaks?

2. When the low end was rich, the engine blubbered and stopped during transition. When the low end was lean the transition was fine. but again the engine was not shutting off wih the carby fully closed.

3. High end tuning looked fine but it was done on a test bench so i need to put it on a plane and check nose up etc to see if the fuel flow is maintained.

Didnt have the heart to put the engine on my plane as i was not sure if i got it right yet! What do you guys think?