so i’m having trouble building planes that actually perform well, mainly because of a certain phenomenon that i can’t for the life of me figure out how to fix. when i pitch up or down, the plane wobbles about. when i let go of the elevator control, the plane will bounce up and down like the nose is on a spring. imagine when you’re on a trampoline and you stop pushing yourself up, you start to bounce lower and lower until you stop. that is what the nose of most of my planes do and i NEED HELP because i have no idea what causes it. thank you!