Thanks for the info. Certainly a good plan to get it dialed in. Funny thing. I am doing this metal work/ building this and I don’t own a torch. lol. I need to invest in one for sure. If I am able to I will get a torch and get into that towards the end of the build before paint. I will be using the hold down clamps like on yours for sure.If you want to fine tune the edge..... put the torch on it to get it (the edge) a bit warmer then tap (slowly as you go) on the welded on flange with a block supporting the lid just inside of t hat to bring it together (ie good old metal shaping). But realize it will flex and expand when warm. My copper pot has a bit of a flex in it but the hold down clamps close the gap and it acts like a spring when it gets hot and starts expanding. I did the tap tap on my flange to get it fine tuned.