Bob,
Yes, I did have to keep the speed up on landing. Had one dead stick which caused me to land off the runway with some minor damage.
From your previous reply, it probably is possible that the butterfly might be hanging up inside the carb, and pushing the throttle rod is releasing it. I did not mean to imply that I thought the spring was the culprit but only acted to keep tension on the rod. Do you or anyone else have a solution if this is the case? Bill O. from Taurus suggested a nylon washer on the opposite side of the rod to be placed underneath nylon arm which is attached by the setscrew.
Bob,I also have one of the Yellow Jugs awaiting construction. Thinking about using this same engine on it.
JJ