I have a Toro S200 snowthrower with a Tecumseh AH520 engine. I am trying to rebuild the carburetor, but I don't know where to find parts. Yes, I can get a carburetor rebuild kit on eBay, but the kits don't have the gaskets that I would assume I'll need. In my pics, I have indicated the rubber gaskets that I assume I should replace: there are (4). I've never rebuilt a carburetor, but I don't think I can properly clean it if I don't replace these gaskets in addition to the diaphram and whatever comes in the carburetor rebuild it kit....can I? Thanks for any help. Todd