70 dart 470 ci drag car build.

I just learned a very crappy lesson.
My spot weld holes are too big and I'm burning my new metal.
My mig won't work well in the lowest setting.
I have the wire speed up max and on the 2nd setting it's an .035 wire only millermatic 35
Piss me off.
I'll fix it or just put some light weight carpet in.
From now on I'm using a 1/16 drill bit.