Looking good Richard, kudos for the effort....The seat pan of my Gutzzi completely rusted away under me, so I had to remake it bestI could using stainless sheet...worked out ok, but challenging...then I did it again using a bit cut from my old van rear door, but that's not so flash and still a work in progress..
Oxy is good for many things, but these days, gasless MIG's are fairly cheap(and cheap), but still well worth the investment, and much better for sheet work