[Phil Waterman]

Hi Tony

Things to check on Windscreen Hinge:

Some of them had a soft gasket between the hinge and the frame that moves the hinge out about 1/16 of and inch.

There is a notch in the hinge fore the wiper shaft if the notch in the inner and outer don't line up this can cause a problem.

Are the screw heads that attach the hinge to the frame sticking up in the hinge when it is closed.

I'll look at mine today to see if I can spot any other possible causes.

Cheers Phil