I pulled the fuel tank, made the error of putting fuel with ethanol in since I don't drive it often, and I had to pull the tank to clean it and rebuild the carb. So I did not take enough photos as I removed the poly tank, I put it in there 20 years ago, but funny how you forget... at any rate, I can't remember if the lines from the vapor collection system go through the slot on top of the tank cover or behind the fill hose. I bought a 20 dollar fuel sending unit off eBay. Is that going to work, or did I waste my money.