#1
hey i just got a brand new fender deluxe roadhouse strat and i changed the 9 gauge strings on it to 10 gauges and the tremelo is messed up how do i fix it
#2
Tune to pitch.

Take off the backplate.

Loosen the screws that secure the trem springs to the body until the bridge is < 2mm from the body.

Tune back to pitch.

Repeat.