Captinjohn, I'm not questioning your RC experience but the experience you personally had when your engine ingested the solder that you used to seal the small hole in the choke plate. Have you actually had that happen and then damage your engine? If you have, then I stand corrected. Yes of course you can question my experience. That is why we contribute to these forms, for different ideas thoughts and personal experiences in our hobby. Warnings such as, be careful because the solder may come loose and damage your engine are much more valuable when actually substantiated or discounted by experience. Mine is, I have never had or personally seen anyone who had an engine destroyed when the choke plate hole is soldered closed.