I know all the books say knees past toes = knee problems. But I've also read that it varies a bit, based on individual biomechanics. I'm 6'5" and have taken about a year off from serious squatting due to various sports related injuries. I'm starting squatting again just working on getting good form down, and try as I might, my knees always come a little bit past my toes. Probably an inch. They don't buckle inwards, and I don't have any pain. If this is a problem, what can I do to rectify it?