At Memphis when I killed mine, Jerry Haas walked over to my trailer when I got back (I almost fainted) and said he was standing up there when it happened. He asked what size axles I had. I told him 35 spline. He said it shouldn't be an axle, then asked if I had an aluminium spool, I said yes. He told me it was the axle splines in the spool that gave up, and that he no longer use them in anything, that he never saw any gains, only a source of problems. He asked "What did you save, 5lbs?" I said exactly five. He said "Save your money next time." I'll take him at his word.
Didn't have nerve to ask for an autograph.