That is a nice setup for testing the needle/seat.
I pulled the cap off the float chamber and looked at the float. It does float, but does not seem the be pulling up on the needle very hard at all. When I coated the float, I used model airplane dope and brushed on a thin coating. The cork seemed to be in decent condition.
is the best course of action to set the float slightly lower on the needle so that it puts more pressure on the seat, or to replace the float? Has anyone found a good source for material to make replacements?
Adam