Does it have a diverter . Is it a fresh rebuild . Does it have a dropp snoot . I like to start with a freshly rebuilt pump and then go from there . You can bolt shit to it all day and if it aint loading , pressurizing , and spitting correctly , you'll never get your "BANG" out of your "BUCK" I would say a manuel diverter is a jets best "BANG" under almost any circumstance .
-beerjet-