Two question I need answering to enjoy this game.

[PotNoodles]

Two really easy questions for someone to answer because I am not sure what I am doing wrong.

1) I have the brake set to one of my buttons on the joystick, but when I press it after I have landed the plane crashes forwards and I end up on my nose with propeller broken . I have tried just tapping it after I land with no luck and was wondering if anyone could tell me what I am doing wrong? Should you use the brake on an axis?

2) What causes the plane to shudder slightly and the speed dial to bounce about when you seem to be doing everything right? What could cause this or is it natural?