Quote Originally Posted by aaronng View Post
Then cutting the top of the gearstick where the threads are won't solve the problem. You will need to tap the threads lower so that you are able to screw the gear knob down lower.
True, however if I only tap the thread lower, won't the length of the thread inside the gear knob restrict how far down it could go?

I think that if I only tap the thread, then the gear knob will still sit at the same height as it won't utilise the extra thread created.