I had problems with my Adam's Foam Cannon as well. Had only used it a few times. Ended up taking it back to the warehouse. Fortunately I live 30 minutes from the warehouse. They tested it there and confirmed that it had a broken part. Was never told what part was broken. I traded it for the MTM PF-22 that Adam's also carries. Just paid the difference. Haven't had any issues with the new cannon.
Great customer service, as always...