Rebuilding a B Max

[JAW]

Hi all

I'm totally new to the RC world and recently bought a used B Max. I have a few niggles I want to sort. I have had excellent advice from Si Coe, but I don't want to be pestering him 24/7

This car is just mainly for bashing at the moment and I would like to make a few changes. What cheapish shock/spring combo's are there that fit the B Max?

Also I have a bit of play in the spur gear (looks like a buckled wheel). It's causing quite a bit of vibration. What steps would I need to take to remedy this, bearing in mind it will be all new to me

Any help/advice would be much appreciated.