Hello all. Got a Peavey Predator, USA made from the 90s. Great guitar, but 1 to 3 strings would always be out of tune after a song or two. Replaced the crappy tuners with Wilkinson type tuners. It improved...but only now it would take 2-3 songs for a couple of strings to go out of tune.

So what to replace next on this thing to improve tuning stability?
Nut and/or saddles.
Gibson RD Silverburst w/ Lace Dissonant Aggressors (SOLD)
Electra Omega Prime Ceruse
Fender Franken-Jag Bass

Amps and the like:
Laney VH100R
Seismic Luke 2x12
Dunlop 105Q Wah
Gojira FX 808
Line 6 M9