I tried the same thing on my 36 Convertible. There is black caulk under the teak in addition to the screws. I managed to get one small piece out and then gave up. My original idea was to remove them and raise them up with 1/4" PVC. My new solution is to add teak covering boards and bed them down and screw them to the top of the existing wood. 1/2" teak should look good. It's now a future project. Capt. George