I was looking through the service manual today and I see that the VN 750 A1-A4 has self canceling turn signals, which would be really nice. I suspect that mine does not have this feature. Seems I remember the suffix is A18. Anybody have any info on this? Also, how is the tach removed? Mine is vibrating and seems loose. Since it was replaced by the PO, I'm assuming something wasn't put back correctly. I saw the self tapping screw in the bottom of the tach and thought it would allow the case to be separated but I couldn't get it apart. Suggestions?