My fuel pump on my 620i Gator continues to run loudly when the engine is running. It comes on with the key for the prime and stops but goes right back on and continues to run after the engine starts. Talking to my local JDD mechanic who services both our 3520 and the Gator, he figured the filter was clogged reducing the pressure and triggering the pump to keep running. There's no in-tank filter and I replaced the inline today but didn't fix the problem. So I guess next is the pressure regulator or fuel pump; any ideas?