Crazy question. I have a 1550 that the previous owner put on a distributor from another Oliver without the drive for the tach/hour meter. I would like to either find a working distributor so I can use the tach and hour meter. We only use this tractor for top dressing and fall cover crop spreading. In my wonder box I have a Holley carburetor (good thing) that is rusty but it turns. Unfortunately the tach drive does not turn. Went to AGCO parts book last night and found the part number. Called the local dealer and no longer available. I checked the “billman” catalog and couldn’t find it in there either,,, so any suggestions as to a recommended route. if I find the driven gear, I will still need a cap and all the distributor guts. so it will be getting close to just trying to find a good used one. Thoughts, suggestions, leads. Dan