So the flatty still has the issue of flooding after I shut it off when it's hot. At this point I've done a lot of things to try to cure it, but to no avail. Right now I think it's heating up the fuel in the line from the pump to the carb to the point of pushing the needle and seat open and overflowing the float bowl. I believe a return line from right before the carb back to the tank might fix it, along with helping what little vapor lock I sometimes get while it's running. Now, I'll have to include a fairly small orifice where the return T's off of the fuel line so that the pump doesn't just pump all the fuel back to the tank, thereby not supplying the carb with enough fuel. I'm thinking .050" or so orifice. Any thoughts? Too big? too small? Does this all make sense?