If the engine stalls when you hit the brekes its because your throttle stop screw is not set right. You need to turn that in some so that the carb will not close so much when you apply the brakes. The angle on the tires is normal to have some. But your front tires are like pointing opp directions. You can try and adjust the turnbuckles and that should fix that. But you do want them to angle in a little bit thou.