I've mastered the mig settings for welding upside down on 12 gauge steel with rust permeating. Never thought I'd say this but I quite prefer welding on car bodies with flux core wire instead of gas.

Welded up the chassis rails and popped out the plugs under the seat. Poured some rust converter in there and then some rust paint. Found where some was weeping and spot welded those.

I will redrill the vent hole and then use the brush on seal sealer Wednesday night - I need to take a break from the stink and cold.

I also got a lot of filler spread on the arches where I need to flatten or curve the body shape from welding. My goal is to kill all rot of course but to use the least amount of filler and to get in the the cavities where the rot starts from the inside and seal it up with rust converter and rust paint. The spot near the fuel flap on the arches was particularly troublesome.

I don't want to do this again in 5-7 years!