I recently got a Savage Model 10 Predator and went by my local shop to get mounts/rings and to mount/bore sight the scope. I left the rifle at the shop while they finished up the job and returned later to pick it up. It was not until I got home that I realized that the back of the scope base did not attach using both of the holes in the action. Why is this? Is the base the wrong one for a model 10 predator?