I didn't dremel my corners open, I have a 93 by the way. I just pryed the whole lense off. It was easy, I cleaned it up and even sprayed part of it to match the car and then siliconed it all back together. I did the same with my headlights, I very very carefully pryed the lense right off the front of the assembly and then cleaned them up and siliconed them back together. It rained like crazy around here the same night and no water got in. I can put up pictures if you like.