I purchased a Martin Prowler Compound Bow. I suspect it to be an older model because I can't bring it up anywhere on the Martin web sight. I took the existing arrow rest off of the bow to replace it with a newer model rest. My problem begins here. I could not get another rest to fit and now can't seem to get the old one back on. I guess I should have paid more attention when taking the old one off. I have checked the models of rests you have for sale now and none of them match what I have. Can anyone help me?