How to configure springConstraint?

Hello, devs. Today, I tried to make car building system. I did servos, motors, hinges and a lot of other things. But springs is pure hell for me… When I try to configure them, they start acting crazy - they bounce infinitely, they send parts under part destroy height (there’s very WIDE floor), but when I put 2x2x2 cube of metal on them, they just can’t handle it.
How I can configure springs, so they won’t act crazy and useless?

It probably possibly have to do with the physic settings in your world. Regardless, have your tried watching some tutorial on how to implement spring constraint correctly? This guy have some good tutorial:

Hope this help.