Hot nipples (wheel truing)

I note my non-drive side spokes are looser than I'd like and plan to give them a 1/4 turn.

I don't think it should affect my centering much, but, anyway,
since it's been a long time I'm planning to put a drop of transmission fluid on each nipple then heat it briefly w/ a propane torch, or maybe vice-versa, heat then oil, just so I can make sure they are not too bound up.

Good idea? Bad idea?
I'll hold off a day until some opinions roll in.

ph in Aptos