Anyone ever try to remove the back rest section on an XRS? My back rest broke and I got new ones, trick now is removing them. There are 3 screws holding it but all they will do is spin ... Won't get any tighter and won't get any looser. Evidently there is a lock nut on the back that you can't get to. The only way I see how is to cut an access hole with a hole saw on the inside of the storage box directly behind the seats.