speedo question?

And if that works, it kinda indicates that the internal cable is a hair too long inside the sheath. So if the issue shows up again at a later date, I would shave a bit off. Maybe .080 or so to start. You would need to cut it off the head end, because the tranny end is mechanically fixed. It would just require you to unbolt the cable from the tranny and slide that internal cable out, trim it, then slide it back in and engage the head before screwing it back onto the tranny. Easy peezy.Last resort.
But I agree the magnetic drive is probably a little loose in its bearings.