Burning the midnight oil ran a few hours short...shortly after I ran out of .035" wire.
Ran out this morning and got some more. Welding to the housing suuuuucks.
Pre-heat with oxy-propane setup (10ish minutes), burn it in (1 minute), use oxy-propane setup to make sure both materials cool at equal rates (20-30 minutes). I usually try to keep all areas within 20°F of each other (laser thermometer).
Only two more welds and it should be all I have to do thankfully.