lock mechanism for a Anderson 96"x80" wood sliding patio door, installed in 1966.

The first picture is of all the parts to the lock. The part I need is the thumb latch lever, that fits in the third hole from the top of the plate in the second picture. All the new ones that I've found from Anderson have the lever mounted in the center hole and the attaching screw holes at the top and bottom, these will not line up with the latch mechanism. If a lever is available or I can take one off one of the new thumb latches, I don"t care what color it is, I can fix that. The latch mechanism in the center of the first picture was made by Adams Rite MFG Co. of Glendale, CA. No one back here in Illinois has been able to locate or willing to help me find the parts I need. I guess it is to small a job for them. Thank you, John Halbesma