i have an 84 TA and when i hit the brakes it pulls to the left, it was worst (i could turn a left hand turn by hitting the brakes) and i replaced the front right caliper last year and it helped with the turning to the left so now it only does it when it's hot and sunny out, and it when i hit the brakes it goes left and then back right and sometimes the right front brakes sticks a bit too. could it be a defective caliper? or is it something else?

not too fond of not being safe in hot weather

 

This just came up in another post, but replaced your front brake lines, this could be part, if not all of your problem.

 

sorry, i didn't think too many people had this prob, but thanks for the info.