HI All, My drivers are usually Loctited onto the axle.After the Loctite has set I drill a 6BA tapping hole so that is half in the axle and half in the wheel.Tap it and then screw in a 6BA grub screw with a touch of Loctite on it so that it is flush with the surface. Not had one move ever. Regards Clif ----- Original Message ----- MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.