Okay, I bought a used 12jg, it has been painted whit in side of the intake and bowl, has an aluminum impeller, droop, and some sort of internal adjuster in the nozzle, that has an external cable, and a handle like a place diverter, but it doesnt move much. The bowl had grease in it for the tail end of the shaft, and a different kind of bearing than my other 12jg, longer with slots in it. The shaft looks to be narrowed. Any body ever see this on a 12jg? The dude said it came off a tunnel hull. Will the numbers on the pump tell me what I have, if so, who could break them down??