I'm gonna do a wild guess, since i have no experience w/ your amp. so here it goes!

Paradise City- Bridge pickup, Drive/Gain at 2 o'clock (should not be an insane amount), Treble 6-8, Bass 6-8, Mids 5-6 (never at 0!).

Sweet Child o'mine- neck Pickup, Drive/gain at 11-12 o'clock (Slash uses less gain on this song, Should be fairly low), Treble 6-8, Bass 6-8, Mids 5-6.

Welcome to the jungle- Same as paradise city setting.

Hope this helps! It works with my amps, so it should work with yours.