Aaron has both sprockets, the welded one for the auger itself and the smaller one on the chain adjuster.
I made the shaft and have both 14 tooth sprockets and "Plus 1" 15 tooth sprockets for the chain adjuster that attach with a spirol pin.
If you can grind the plug welds out without touching the shaft, you can have ( or weld yourself) the new sprocket welded in place. You must make sure the new sprocket sits perfectly flat on the end of the auger or it will wobble and wear out itself plus other components.
Jeff
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