Aero question
 

Has anybody else experienced a rear drive shaft popping out of the diff cup ?
And if so how did you cure it?

I've had one of mine pop out and I know of another one

Happened to me without much effort,
... looking at it they could do with an extra mm in length IMO without any binding issues....

Chances are, if you are running the rear suspension with a lot of droop, you will need to insert some limiters in under the shock piston.

Measure the shock rod thats exposed on both sides and adjust accordingly.
Check a few setup sheets it should say what length people are running.
Also possibly run standard rear arms and not medium flex
It is the amount of droop your running so above guys are right :D

Are you running any track washers to increase the wheelbase ?

Er track washers increase track, not wheel base???

The car is completely stock atm. Will check shock length. Have checked and it's 95mm, seems normal.

Sorry that's what I meant, having a blonde moment !