Squatting too deep? Fuck you've changed!! :P
I'll work on hammies for a while because it's probably that. Spend too much time putting work into quads.
lol I've always been of the opinion that you should only ever squat as deep as you're leverages and mobility allows.
That said, my own squats are definitely aimed at getting 2 whites at a powerlifting meet rather than winning depth awards lol
Idk what sort of training template you're following atm, but I'd do 3-4 sets of hamstring curls at the beginning of your workout BEFORE you squat and/or a set of 200 with a band at the very end of the session or on another day/extra workout