The pump is bad, the last test into the gauge attached on line before the filter would not reach the minimum pressure. (Output of pump dead ended into gauge.) Barely reached 52 lbs. - I don't know how it read 64 pounds when punched and running. The readings seem to be all over the spectrum on different days. It does not leak down though, neither when all connected or just the pump to the gauge. It runs fine when it starts, even if 'priming' with a little fuel in the manifold was necessary. Thanks for all the help!