RE: Rain & dirt protector
ye leave the role cage alone.
1st
remove the bolt at the top of the servo saver, there is also a bolt under neath the car that may have to be held while you take the top one out.
2nd
there are two further screws to the under side that hold the servo plate in place take them out
3rd
there are 4 screws that hold the front shock mount just loosen them the servo plate will slid in and out with the servos attached.
yes it is still a ball ache but it needs to be done to clean the car apparently servos dont like water