actually, diablo blaze is a small bore paint, .687, so that is probobly your problem, to much air getting around your ball, making it shoot a litlle slower and off target, and as gor the bob long reg, yes u want an inline reg, and you will need a metric to standard hose adapter because kingmans fittings are metric and the torpedos holes are standard
Both work, just prefrance. It's just a issue of comfort. With one of my regs you need a angled fitting or else it would look really really weird and feel just as weird. But if you add the angled one it is less awkward. Still looks funny though.