Discovery 2 wiper arm “pressure”

Fitted new “ebay genuine lucas” wiper blades. They arent clearing the screen in a couple of places. Ie the blades arent making contact with the screen. Ive fitted new clips and lubricated the pivot points on the arms , but no success. Will they bed in, or have the springs in the arms gone weak, or do they all do that ?

HI best blades i've found are the bosch 307 i think it's something to do with shape of the screen that make's after market one's don't touch also a lot of people change them for disco 1 arm's and blades prob better fit

Sussed. Id noticed clips were a tight fit in the recesses in the end of the arms , meaning as the arm moved throught its arc, the blade wasnt being allowed to pivot. Ive widened the recesses by bending them out slightly so the clips will move freely in them, and they are wiping perfectly now.