Updates. I have been spending a lot of time fixing bad fiberglass and some of the design issues with my kit. With that said I want to give a little tip for the guys that are building kits or will be. Body filler was not a product made just for body kits and is not supposed to be used to fill giant holes, cracks, or for anything that is structural. It can be used up to 1/8in thick anything deeper than that you should be using fiberglass or fiberglass reinforced body filler then a thin layer of filler. I have been in the paint and body industry for 15yrs and I am not claiming that what I do is the best way, I just want to improve the quality of kit builds- mine and others. I have found spots of filler on this car over an inch thick and over areas that were cracked all the way threw the body. I have also seen a few other build threads that seem to be building the car with way too much body filler, this kind of stuff will surely crack and need to be refinished again.