Hello d3print,
It wasn't difficult at all. I just selected the entire lump of geometry and hit the button. I checked the geometry of the model and even after that there are a bunch of problems. I have a little free time and am trying to use it as a challenge to sharpen my skills. It may not turn out anyway but at least I will get some practice. It seems the edges are sort of sloppy and gapped, overlapping, etc. in a few areas among other things and the rounds look messed up in many places. SCE has some great defeaturing tools so once I hopefully get this into a solid I'll be able to tighten that up. I'll try to isolate the pieces and parts from the largest mass of the model to indicate what surfaces are causing problems.