Ah, OK, thought you had a few videos regarding the FNR's and this one gives me a good heads up before I crack open the case. Thinking I'll cut the shaft (maintaining both bearings/bushings on each side for best strength and almost looks like I can add a true bearing on the outside) and grind with a cutting disc a groove for an E-Clip, though maybe a C-Clip. Thinking the E-Clips are heavier duty a little more since I see are use on some outer axle shafts to hold on the key'd axle rims. Mine (at least the one I'm going to use) are threaded with a bolt and washer on the outside. Good deal!