one thing that i saw that i might bring up. The primary solenoid at least on the snow kits is now suposed to be between the pump and the tank. This way there is less of a chance that water will leak while the system is suposed to be off. We had a kit that was plumbed the way Lotsofmiles' was and it seeped bad enough to hydrolock.
just a bit of info i thought might be helpful.
built motor, big turbos, built trans, etc all by me, parts from Elite Diesel
7.1 1/8 @ 100
11.27 @ 105