Converting New Version Dewalt Transmissions

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Drills like XRP 940 have updated internals compared to the internals in the "nothing But Dewalt" paper. Any one successfully converted one of these yet ? Is there an update for the new drills in the paper anywhere ?

I believe getting a pinion gear from another transmission is not an option as the pinion gear has a different ratio now than the gears in the transmission. The challenge appears to be how to make use of the pinion gear on the dewalt motor (which has a much bigger shaft than the FP). One option might be cut the dewalt shaft off, drill a hole in the cut shaft for the FP but that shaft is likely to be pretty darn hard. Another option is try to press off the pinion gear but its pretty small and it wouldn't be hard to trash it trying to remove it. Anyone don this yet ?