Hi new to this forum so dont know what has been asked before. I have a AMF Playmaster 8x4 table i am disassembling to move, its maybe 10 + years old. I am down to the slate and there are screw holes in the center (3 piece slate) that are filled with what appears to be bondo. I am trying to figure out how to remove the bondo to access and unscrew the center piece without damaging the slate. I do understand there is likely wax under the bondo, but i am perplexed how to remove the bondo??? any help would be greatly appreciated!