REAR WINDOW RATTLE...While you are all looking at the rear window on the 451, the most common fault on the rear window is rattling on the move, drives you crazy. This can be solved easy as its the back metal catch on the window that rattles, and you just cover it in black electrical tape, and it stops rattling. Easy. Just make sure you do not over-wrap or the catch jambs with the thickness of the wrapped tape. The tape falls to bits eventually from open and closure of the catch (takes about 2 years), but you just re-new the wrapped tape.