A727 Rebuild kits redux - Rebuild kits everywhere (62-70 vs 71+)

transman said

I'm not a fan of shimming the planetaries. This is a band-aid approach. What you want to check on the planetaries is side to side motion on the gears against the pins as well as the up and down movement of the gears. If there's a lot of side to side movement, then shimming the gears is a waste of time, as the pins are worn out.

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Just to clarify things, when I said shim up the planetaries I referred to the planetary gear set total end play, not the planetary gear sets themselves. The shim(s) go between the sun gear drive shell and rear planetary set. The factory serv. manual shows checking the gear train end play but never said anything about reducing it. There's no need having the gear sets slapping back and forth excessively.

I am not a fan of shimming the actual planetary gear sets either because like you said if their loose their worn out and shimming isn't the correct approach.