I am having problem finishing the build of my ld3 pro. I have sirio .12 with threaded shaft and for some reason the threaded shaft clutch nut that came with kit does not screw in far enough to secure the flywheel. Originally I thought the shaft was too long so I cut it down very short and still same problem. I am using the collet that came with sirio motor and still no luck. Anybody have any ideas? Do I need a different clutch nut? I thought this would work, it seems like I need to go buy sg motor which makes me and my wallet unhappy seeing I have brand new sirio sitting in front of me