Body Filler Question

One tip, get your metal work as right as you can before you think about filler. The filler is only a surface enhancer. 1/8" - 1/4" thick at the very most. I just got this one back from metal work and there were 4 areas I couldn't get to from the back side so I tack welded studs to the panels and worked them out with the slide hammer. Whole lot better than slathering on the filler.