This is a stretch, I know, but I'm trying to put together a unique Suntour 6-speed freewheel. I have all the parts except a 21t sprocket that is from the alpha freewheel body. The caveat is that the 21t sprocket cannot be the lowest or second lowest gear in the freewheel, it needs to be the smaller diameter, splined sprocket.

Thanks for any help,
David