Tranny repair shop recommendation needed - Phoenix area

Just drill the separator plate (no particles enter the vb) and install the accumulator piston into the case; then the fat spring; no other; optional a 5/8" length of 1/2" id water pipe inserted into it. The TF-1 kit says to grind around the governor valve; plus grind off the edge all around the low/reverse piston...too much of a pita. Most vb separator plates have tiny feed holes for the 1-2 and 2-3 shift; and enlargening them does more than anything else to improve the shifts. I do that to every TF without asking; gives a cleaner shift and usually second gear scratch at wot.