Great photo's John of an equally great event. Sad to hear you also had wiper arm issues though. One of our recent I.O.W. tour group had a similar experience on a Plus Four when one arm was lost completely and a second removed as very loose during journey down. Fortunately the remaining one was in front of driver. I've read elsewhere that the securing wedge over time forces the body of arm where it fits over drive splines into an oval, so loosening fixing. Clearly this is a self exaggerating situation as the arm is tightened further. Maybe the answer is to be found in the latest arms MMC are using which I believe have a thicker wall to arm at the attachment point
