So my crank ups on my 69 Cutlass are in sad shape, think the tracks just need a little cleaning but the left side only goes down about halfway and then get stuck and need help going back up and the right side only goes 3-4 cranks then gets stuck. My dilemma is I'm not sure how to remove the back interior paneling. Also part of the window 'broke off', I think it's the side trim/weather stripping piece which creates a big gap when the front passenger is rolled up