hi Wayne, I ran my engine yesterday after drilling the nipples and carb. I found that the high speed needle could be turned about 2 turns past the peak before it started to choke. the low speed seem to adjust ok going from rich to lean in about 1/4 turn. I could tell by the threads on the high needle , it was further out than before. I first tuned the high speed by lifting the nose to 45degrees and tuning just past peak. then quickly return the throttle to a high idle and tune the low just rich of the peak, also tested using the pinch method. The transition is ok if I don't let it idle very long and then slowly transition into full throttle.I think that what is happening here is that 1. then engine starts collecting fuel in the crankcase when it is returned to a less than full throttle position. 2. then engine starts cooling off when idlingand when it gets below about 250 degrees at the plug, it starts to run ragged and loose rpm until it dies. If I idle too long, or throttle up too fast, then it just dies. I did notice that after idling about 15 seconds, then throttle up, there is a small air bubble in the fuel line between the remote needle and the carb. Could this be a air leak at the remote needle? I didn't see it on the tank side of the needle. I am at a loss now as to what to do next. Try some srceen in the muffler to add more back pressure and try to seal up the needle valve.

Yoyo27983