Well.....a bit more than a fettle really. It was (still is) a bit bent. I stripped It and straightened things out as best as I could, followed by wire brushing all the rusty bits and slapping a coat of rust killer on them after. There is a nasty dent in the top of the tank which makes things sit a bit lopsided. The tank has been over pressurised at some time in it's life and the bottom has bulged, it used to rock about on it when I first got the lamp until I tapped it with a mallet to make it sit straight. SO my question is......Do I cut the bottom out of the tank to get to the dent from inside and then braze it back together, or see if I can find a replacement tank. The other alternative would be to strip it for spares for me other 350...But I would rather restore it back to working order if possible.