I've been squating like a powerlifter for a long time. but now, for few reasons, i started doing ass to grass type squats. My problem is that after 2-3 reps i feel that my legs are gonna cram ( i hope its the right word

) any moment. And they sometimes do if i finish my workout at maximum range of motion. I feel that i can like double the weight ( well u know what i mean

) that i am doing, but this pain prevents me from doint that. Any ideas how can i solve this problem: maybe some of my leg parts are underdeveloped and not suited for such weight yet? what then, should i continue doing my squats the old fashioned way and do specific exercises to counter my weak parts? Thank you for your time for reading this. I hope my English wasn't super bad
