Pat, the splines were pretty well gone. I did find one of the new ones in stock at a marina in New York
and now have it in my hot little hand.
The new design doesn't bolt directly to the fly wheel
. Instead, 8 soc-head cap screws hold flywheel on and non metallic sleeves fit over their heads. The flange holes are counter bored to accept these sleeves, who's function seems to be to absorb shock and or vibration. Judging from the shape of the splines on my old unit, this is a much needed redesign.
Thanks for the reply.