Yeah that's the part I'm afraid of. But I have a pretty good eye when it comes to radii and that kinda stuff since I do a lot of carving, wood working, machining of jet engine parts, etc. I think I'll be ok.
As for the exhaust side I think I am ready to start on the bowls. I smoothed the exhaust ports a bit and made the opening more rectangular in shape. I didn't open the port up more than 1/16" or so.
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