"The last piece the puzzle was restricting the maximum throtle opening on the Ellison by 3mm (0.125"). Just as Karl and Larry in Canada said. It allowed the engine to run smoothly at full throttle on the ground at 1850rpm. I made a run down the runway and the engine stayed happy. Taxied back and took off for a brief flight, a tight pattern with a few extra turns overhead the airport."
"Thanks for all encouragement and advice. - We learned a lot. Now we are ready to start more routine test flying and getting some minor leaks to stop and making the radio transmit."
Doedo