I ordered one of these for my prone shooting and have a question. I have a couple of rifles with oiled wood stocks. I know these are not supposed to scratch the stock when mounted. I am looking down at the mounting bracket on a brand new Harris bipod. there is a pad on the front side of the cutout for the mounting jaws, but, No Pad on the back have of the bracket. Please let me know if I am missing a pad. thanks rc