Wow-thanks Frank-I had to put some thought into the math. I did not think anyone was looking at this anymore. Project is on hold again-we are in the process of moving for the 2nd time in 1.5 years. using the offset keys and jumping a tooth if necessary will get the job done. The adjustable gears proved too impractical to produce one off plus I would always be concerned they would fail.

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Tony H
W111 280SE 3.5 Coupe
Manual transmission

Past cars:
Porsche 914 2.0
'64 Jaguar XKE Roadster
'57 Oval Window VW
'71 Toyota Hilux Pickup Truck-Dad bought new
'73 Toyota Celica GT