Replacing ignition switch on a NAS 90 but ran into a snag. Look like the PO replaced the switch at one time with non-genuine. Ordered a genuine one from RN. Pictured. Part number LR039638. Says it the right one. Anyway. The switch when installed won't engage with the male in the tumbler. Wrong size and shape. Is there an a adapter of sorts that is missing? Wrong part sent by RN? The non oem part that was taken out obviously works but is different female connection. Any help greatly appreciated. Thanks.