[priobe]

I have to agree with Rick. I think more importantly the question should be asked, Do I run a return or a dead head regulator.

Majority of the books recommend a dead head reg. however, I am running a return (bypass). There are very few reg. that will operate at 3 psi that are designed for a bypass setup.

I have heard that there is a improvement in perform (night / day difference) with using a dead head regulator. When I was using a dead head by carbs were not properly tuned, so I am have not tested it, maybe that person will chime in to share his results.

I do remember my pressure would creep higher than 3 psi until heat set in than the pressure would lower.

There is a thread on this on CC with this concern. If I remember correctly, this is why I went to a bypass style, along with having cooler fuel circulation.