what causes my spur to be swiggly?

[blueb8llz]

dammit. i wish i posted this thread before i bought 2 sets of spurs for my rustler haha.
o well. i guess after these shred, maybe they wont this time...then imma switch to jato spur. thanks for the tip fellas!

oh one thing, are these spurs bigger...so im using a 86 tooth spur and a 21t pinion, would i get the exact same with the .32 pitch pinion and spur?
would it fit on the motor mount?