The paint dried on the muffler. It turned out way to heavy. I used automotive muffler tail pipe material and turned off about half the wall thickness. Anyone have ideas for thin wall steel tubing? I was thinking of cutting up some old automotive shock absorbers. I found an old vaccume cleaner tube that looked promising but, I was not sure if it was chrome plated or cadnium plated. Cadnium fumes are deadly so I did not use it. I also looked at the local chi-com tool place for a slip roller/ ring roller to make my own tubing without success. Brazing with map gas is working OK. Aluminum solder is no good, it melts when you run the engine. Sounds like an excuse to buy a TIG welder.

I put an HDA carb on it. I also have a big NOS walbro that is big, an SDC 20mm. I see it has only one ajustment screw. Any ideas on how that might work?