Hello. I have trying to work out how to change the rear wiper on my CHEVROLET CRUZE LTZ 1796cc PETROL, 5 Door HATCHBACK . The actual blade assembly will only lift up a small amount against a very strong spring and I don't think that even with a lot of pressure it will stand away from the rear screen, an even with the cover plate over the section that connects the wiper arm to the motor removed it makes no difference. Any guidance would be most helpful.. Thanks in advance John