Im having to do some body work repair. All I have is a fluxcore welder and it burns through sheet metal super easy even on low settings so I'm just doing small tack welds. If I'm going to have to do more bodywork would I be better off learning how to use mig? Im putting patches on with thin sheet metal. Here's a Pic, I know I'm not a good welder I'm just trying to get a job done.