Bench Press, dead lift, and squat

[IrOnMaN]

I will be honest with you guys. Here are numbers with proper form:

Bench press: 290lbs

Squat: 370lbs

Dead lift: 405lbs

I just recently found out (a few weeks ago) that my dead lift and squat forms were messed up. So, I had to start fresh and then build up with the proper form. For squat, I never did "Ass to grass" because I was told that going deep wasn't necessary. For dead lift, my form was bad because my foot placement was not correct, my hand placement, and I did not drop my butt. Even though I was lifting 400lbs+, my dead lift form was not correct.

Does anyone else have trouble with their form?

P.S. I know my bench press is low and that's because I had to start fresh with proper form.