Raymond,
First, let me ask the question, what model is you car, ie. 30, 250, 280? As you know there is a difference in the underlay of the dask . If you have a 280, then the pading is covered in vinal, and you glue leather over it. For the wood cover over the instrument panel, you glue direct to wood. Use 3M Super Trim Adhesive in black spray can. Now if I remember correctly, the 230s did not have and pading underlay for rest of dask board.
Bob