My fuel pressure readings are bouncy after about 37lbs. If adjust them any lower they are steady eddy. Using an Aeromotive 13301 AFPR with the heavy spring installed. According to instructions , I should be able to get between 20-65 lbs.

i am also having problems getting over 45lbs when adjusting the regulator. I am also using an Autometer 0-60 lb mechanical FP guage installed directly on the APFR.

Any thoughts on either problem?