How do people have such good squats? I'm really struggling to improve mine. I'm on 65kg for 3 sets of 5 reps atm yet I can DL 130kg :/
form - is yours good? if not this will hamper you.
have you progressed up to 65kg then stopped, or are you still progressing?
some times it can be good to not squat. do something else to hammer the legs, say leg press heavy, extensions heavy and RDLs heavy, for a few weeks.
calves - are yours lagging? you'd be surprised how much your calves are involved.