I'm doing a color change from the gray blue to black on my 85 grand Prix...everything's gone great so far and I'm almost done I'm working on the dash now but for the life of me can't get into the nooks and crannies up where the windshield meets dash...I've tried the little sponges, paint brush and just spraying...thinking I'd just take a razor blade to the window after...anyway I got a mess now and am thinking I should of just pulled the dash enough to get to the tight area to begin with, but the ol man told me not to, well since I don't listen that good I'm thinking I need a co -signer... Is this my best option? Please let me know what I can do, thank you!