You guys driving mtx5 have problem with run away car ?

I look inside mugen seiki website, mtx5 and mrx5 have same radio receiver box.

Yesterday my friend total lost his car ( mrx5 ) on straight, .... his car hit the wall very hard .......... ( I want to tell him there is maybe heat and vibration problem with mrx5 radio box, thus he should consider to remove the receiver casing and stick the naked electronic pcb with thick foam to radio box ). But before I tell that suggestion..... I want to make sure my suggestion is a good one, so you guys in mtx5 have run away car problem ?