Ok, I hooked my system up, turned on the switch, pump kicks right on and on up to 105 it goes and shuts promptly off, works perfectly... maybe.... how much bleed off of air is normal? I listened REALLY carefully at the tank and pump and fittings and can't hear any leak, I listened at the ONE and only splice I have for the air pressure gauge line which I used a brass coupler fitting and then put silicone on the threads and outside of the nuts. I can't hear any leak. it goes down to about 90 lbs. from 105 in around 30-40 minutes. Is this normal for the press the hose into the fitting type lines, or do I need to get a Dr. stethoscope thingy and listen better?