I bought handles that are splined and find I need em square......guessing that the door latches I have are not 1940. But........one of the square posts for the inside handle is missing. Note sure if its broken off or missing all together. Is there any way to make something? Does anyone have 2 square connection door handles for my 1940- need not be perfect! Also notice the handles are loose, and sometimes can open on their own. Is there a gasket or piece that should be mounted with these handles that keeps them taunt? Thanks, George in Tallahassee