[Charlie ny]

Ted,
Miniscule as it may be adding a shim to lengthen the p/r or changing the
fuel pump stand gasket will make a difference. Depending on the components used
to build the pump .010-.015 can quite easily change the pressure by 1 psi or more.
I'm extremely happy for anybody who can build a f/p and the thing tests 'on
the money' the first time.
I know I'm dragging this out but the thickness of the diaphragm, the
machining accuracy of the f/p stem, washer thickness as well as the quality of
the spring and rocker arm can make building a good f/p time consuming.
I caution guys to not think just because pump sucks and pushes when
manually actuated that it is in fact good, not in my shop anyway.
Charlie ny