Klaus,

The die is cast. I started cutting a few minutes after my last posting. My rubber may be worse than yours. Besides being cracked, some of it was already chunking off in pieces. The underlayment is spending the night in the bath tub, and I cleaned the carpet with laundry soap, a brush, and my little pressure washer.

After everything dries, I think I might look at Lowes/Home Depot for something like thin rubber hall runner to place on top of the underlayment. To bond it, I may test something like Liquid Nails. We will see. I'll let you know how it works out.

At least I can cut some indoor/outdoor carpet scraps I have around here to throw on the floorboards so I can use the car while everything dries.

Thanks,
Charley