OK, thanks everybody. I am going to order the return regulator and see if I can get the pump lower. I am not sure I can get the pump lower than the tank, but I'll drop it down some. Regulator on the firewall with 3/8 return line to the tank (or 5/16th?). I'll pull the filters to make sure they are clean and then get them off the fuel pump.

I report back on my results.