How many rubber plugs hold the padding in place? I found a hole in my firewall which I didn't know what it was for. It corresponded to one in the pad. Jeff S said it was for the rubber plug. I have a few if these original plugs so I figure there is more than one needed. Don't see any more holes in the firewall though. Are they kind of hidden. The one I found was up high near the accelerator bellcrank so easy to find. Now with the motor in tough to look at firewall on engine side.