[B_man_Al]

I know this is a little off topic, but I have been using the Airtek electric pump for several years now, located at the back of my model B. I had the same excessive pressure problems overrunning the carb float. Rather than add a regulator, I put 2 Tee's at the inlet and outlet of the pump and a bypass hose with a very small orifice inserted in the hose to limit the amount of pressure out of the pump. I don't remember the orifice size but was about .02 to .04 if I remember. I used a solder plug and drilled it out till I got the pressure I wanted. Its around 1-2 PSI now, down from the 5 or so.