I have a front door I am having stripped. It has two Banham Security Locks on it that will need to be removed before I can send it off. Main one is a Double throw Rim Latch type lock the other secondary one is a Mortise lock. Are there any tips on their removal. The Rim Latch has one big screw head on the jamb side of the lock and two pairs of smaller screw heads. I presume the big screw is the main retaining screw whereas at least two of the others secures the barrel?