[AdeC]

Just given the cars a once over and there are a few issues:

Class A:

Oxo Cube - Corvette CR6
There is something heavy banging about inside, I'm assuming some weight has come loose. Needs opening up and sorting.

Scott Sports - Jaguar XJ220
One of the motor cables is rubbing on the front wheel and needs re-directing
   

Savage GT - BMW LMP
Tape over the rear screws is curling and rubbing on the surface. Pretty minor, can either trim it off or replace the tape