Originally Posted by
repechage
The body is the close ratio version of the basic original design with the spline removal engagement. The small cog appears to have the same progression center to center of the others, I would not worry about it.
I thought perhaps that was it, but the seller doesn't have any pics of the box (which, if it's original to this unit, should show the tooth-count). I guess what I'm ultimately saying is that I'd be more comfortable if the threaded flange of the outermost cog was deeper, coming down nearly flush with the inner body.
DD