How do you get the traction wheel inserts out? They seem to be glued in by Vex…
One way we do it is to stick a screwdriver in until the tip is right in between the two inserts (there should be a small gap) and then pull the driver to the side and push the insert out
Boil 'em.
(and yes, it was a joke)
we tried and bent a screwdriver… 
I usually use a small allen wrench or something similar and push it slightly diagonally into the hole (there is a small gap between the two inserts) and then go back and forth between two opposing sides pushing the the insert out. Once you have removed one insert, you can just take a High Strength Shaft and push out the other one.
This has worked well for me.