Just this past Friday I finally got the truck buttoned back up. I took care of a number of things while the trans was out including the rear main, oil pan gasket, trans input/output seals, t-case output seal, new exhaust gaskets at the CAT and the manifold, new trans cooler fittings, etc. The trans internals got the Sonnax boost valve and line/lube kits in the pump, plus a new EPC solenoid and I drilled the case for the leak pressure to vent. That also meant new valve body and accumulator gaskets. But I can say that the reverse issue is gone (so far anyway). I've put about 100 miles on the truck and it hasn't had any issues with surging. It was a lot more work than I expected, but I would do it again. I only have about $250 in the repair. The pump wasn't the best inside, but makes spec-pressure and as little as I'll probably drive this thing I expect it to last a good many more years now. I did not to any clutches, and I only saw 4th (which looked great BTW) because it came out with the pump shaft.