[gofastsandman]

Read that book recently. Get a vacuum guage with a t on the end and work your way back. I replaced my tank to filter line w/ 3/8 id A1 under deck rated hose. My 30 hr filter was the culprit. Your suspects are the vent hose being kinked or vent blocked. Pickup is next on the list. I have 3/8 id alluminum tubes w notched bottoms to release any gremlins. The nylon ones w/ screens get clogged and blow motors. Change it. Use anti seize when reinstalling pick up. Permatex makes a good one. The e 10 gas we got in August cleaned out my orig tank and clogged the 30 hr Racor.

No worries, we`ll get you back on the fish in no time.
GFS