I finally got the carb cleaned. My problem now is with the Float needle valve. I got the right p/n 394681 and it came with two needle valves one has the seat. One is a viton tip and the other is alluminum. The one I need is the viton tip. Does this one need the seat? The seat that comes with the needle valve is too small. I'm thinking that the viton valve does not use the seat, Am I correct?

If your carburetor uses the needle with the viton tip, then you do not use the seat.

Thanks for that information.