I don't think that doing the whole quad that way is a good idea, but I painted my grab bar with it, and I like it pretty well, holds my foot better when doing wheelies, and gives you a little more grip when pulling on it.
Just about the same thing happened to me, the guy removed the TORS and left an idle screw out of the right carb. Then when I was trying to figure out why it was so hard to start I took the carbs apart, and there were several parts missing out of the internals. So if you havent already, I would definately go through them and make sure everything is correct on the insides before you do anything else.