I should have known better, but I rolled the die. I haven't lost yet, but there's no jury yet. This grinder shouldn't cost $107. Everything faced south when I opened the all-white, unlabeled box. No manual, no instructions, just an exploded view of the parts. Why?! Where can I get spare parts? Other than that, it's still a pretty decent grinder. It seems to be a little quieter than other straight grinders my colleagues use. I use it about twice a week for a few hours for removing paint and…