[zephyr9900]

I never did post a picture with the final solution. I bought a split coupling (split lengthwise and also crosswise) from McMaster-Carr (their part 3084K31, which is a Stafford 5L008008REM)

http://www.mcmaster.com/#3084k31/=4t4257

and bored the ends to fit the Tormach motor and leadscrew end.

Randy