Thanks everyone for the suggestions so far. Heinz, your suggestion is very logical and could be a indicator to start with. I will give it a go on Sunday and report back. I have also ordered some basic windscreen cleaning products that will clean the windscreen without leaving anything on the screen and should remove any previously applied coatings ( if it has any )..
Lorne, yes I have a range of torque wrenchs 1/4, 3/8 and 1/2 drive and all in calibration..
I also have an American pull gauge but only at low poundage..
Regarding the Allan ( hex) screw that secures the wiper blade cap/arm to the wiper spindle, my experience on our Plus Six is that if this is not snugged up tight the wiper arm will eventually work loose on its spindle and will slip on the spindle or detach. I do not have a torque value for that screw fitting, but that also applies to most of the car, the only torque given to an owner is the wheel nut torque in the Ops manual that comes with the car.
I believe a Tech contact into the factory would be such a good thing if an owner/operator had issues and needed advice. The CX owner presently has nothing in the way of parts schematics or wiring information, so even less than most Trads...I cant even compare part numbers !. The MMC is semi forcing CX owners to use their main dealers, but I have found this route to be less than ideal, plus in the summer it takes weeks/months to get a car booked in and looked at, let alone fixed.
