[Closed] Advice on fox fork refresh/upgrade

I've got a used pair of 2014 fox float 32's, CTD kashima factory fit forks. They have developed a bit of sag when unweighted, about 15mm or so when I step on the rim and pull up on the bars, obviously not sitting on the bike and not 'actual' sag. Pressure is what it should be (60psi).
Are there any pointers out there for what type and amount of oil I should use, and a seal kit?? Upgraded top wiper seal??
I've read that you can upgrade the internals to the latest but can't find any suppliers.
I'd like to do this myself as I'm pretty good at spannering.

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