B. Represents the actual impeller support value where the modifications are to take place.
C. Represents the same item but from a head-on view, looking directly into the impeller assembly.
The blue areas designate holes or openings. In the head on view from "C", the center gray/black ring represents the impeller shaft support, where the rubber bushing seats to stabilize the shaft/impeller assembly. The black bars are the molded support beams that hold the bushing/shaft centered. The blue rings represent the 3/16th's plastic tubes we are going to glue into the housing. For clarity, "B" seats into "A" and then "A" is threaded to a finger-tightness onto the main pump body.
