I did some checking in the archives and found two numbers for the master swaps, 10-1331 and 10-1371. The local napa had the 1371 so I tried that one. I am having some issues with getting a good pedal. Is this from using the 71 instead of the 31? I havent had a chance to power bleed them yet. I am going to pull the wheels and check everything else as well. I lost the brakes driving through a pond so I am not sure maybe it is a different problem than just the master. Maybe there is a fish stuck in the drum..........or that bottle of crown royal I was looking for.