dealing with "spring-in"

For the people who autoclave. What are the best techniques for avoiding “spring-in”, winding up with a sharper angle than you intended.

I know having the right tooling material helps, overall part geometry helps.

The only real solution I found was compensating for spring-in during mold design. Example if you want a 90 deg bracket, and shrinkage is predicted at 4 deg make it a 86 deg mold.