We can do the gears fine with our normal group of 6. BRD, RDM, WHM, THF, MNK, MNK. We don't bother with skillchains or anything fancy, just melee and spam WS at 100% like normal. I pull out Joyeuse on RDM for this. It is possible to do without, but having that moderate amount of extra damage seems to take all of the risk out of it, at least for our group. Pulling the gears without linking is the most difficult part.
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