Need to replace front windshield and have 2 sensors for the wiper blades and brights on the glass itself. Aftermarket replacement glass is 30% of the cost from the dealer. Aftermarket glass looks the same and in fact has the clear areas in the upper "black zone" for the sensors. Looks as if it is easy to remove the existing sensors (maybe with razor) bladeand then re-glue to new glass. Is my approach correct?