I weigh 195lbs and I bench 285 6x and can only squat 250 6x. I mix up my routines every 4 weeks from 3 heavy sets of 6 to 10-8-6 increasing weight. I do leg curls, extensions, presses and squats. I don't do all of them everytime but I do mix them up. Anything else I can do to get my legs to catch up?