Turn up the simulation frequency, that will stop the spazing out. Also the last gear should be the only gear. The rest should just be frictionless wheels, That way the tracks wont strech before and bunch up after they pass over powered gear.
The tracks arent on the right layer, there on layer A when they should be on layer I. All the wheels are on layers A and I when they should only be on I. The blue wheel is the only one having problems with being on layer A, so you can get away with only changing that one.
If you want to easily build obstacles with out having to change every object to layer I so your tank can drive on them. You will have to redo the layers.
Q clears the way for the rocket
1 is to jettisons the first stage
2 is to jettisons second stage
5 is to jettison the fairings on the last stage
And, WASD is to control the rocket
