Hi all, new to forum. I'm trying to resurrect an old, neglected clark lift. It starts & runs but the fuel line from the regulator to the carb ices, then thaws when engine warms up. As soon as that lines thaws, it starts running rough and eventually dies. I've determined that the diaphragm in the regulator is bad as fuel seeps through the vent hole in the cover when cold then stops when engine warms. Can anyone help me identify this regulator/fuel system. I'm attempting to find a diaphragm with little luck. Regulator is much different that Impco that I'm familiar with. I have a picture but don't see where to post in the forum??