Needle bearings long gone!!

I split my W3 case tractor (530) back last summer due to a differential issue and finally got around to replacing a broken synchronizer ring for my manual shuttle that I noticed upon splitting tractor. The shuttle always worked for me, yet ar times was difficult to shift. According to the service manual there is supposed to be a needle bearing in the gear that comes in from front of shuttle gear box. The needle bearing case is there yet no needle bearings anywhere to be found. It turns out the one gear G16623 is readily available so does anyone know if this is a common issue for mechanical shuttles? The male end of gear G16623 is rough and no longer usable if I put a new needle bearing in.

 
(quoted from post at 23:14:41 03/29/18) I split my W3 case tractor (530) back last summer due to a differential issue and finally got around to replacing a broken synchronizer ring for my manual shuttle that I noticed upon splitting tractor. The shuttle always worked for me, yet ar times was difficult to shift. According to the service manual there is supposed to be a needle bearing in the gear that comes in from front of shuttle gear box. The needle bearing case is there yet no needle bearings anywhere to be found. It turns out the one gear G16623 is readily available so does anyone know if this is a common issue for mechanical shuttles? The male end of gear G16623 is rough and no longer usable if I put a new needle bearing in.
The parts manual clearly shows a Torrington needle roller bearing in that location, the rangebox input gear needs the support from the needle bearing to keep the shafts aligned to keep from jumping out of gear in the range box. Just a thought, I have seen steel shells to press over shafts to provide a hard surface for needle bearings to run on, if you could find one at a bearing supply house maybe you could have the front of that shaft turned to accept a press on sleeve, I would go to one of the major bearing supply chains and explain the problem, maybe someone will try to help you out.
 

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