Great question — answering as the UphillTech team:
The video you linked to is pretty much the way the service should be done. A couple things I would change: --the correct size box wrench for the top caps would be better than a crescent wrench and you can use the box side (closed loop) for extra control. They are sometimes on ridiculously tight especially on forks with decades of non service. Best would be a correct sized socket and ratchet. I think RockShox forks of that era were 26 or 28 mm. Measure the distance between opposite flats for the correct size. A caliper is best for this but one could arrive at the correct answer carefully using a tape measure. --When it comes to hammering on the foot nuts, make sure around 1/2 of the threads...
Full answer by Jeff: https://bicycles.stackexchange.com/a/100424 (CC BY-SA 4.0).
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