At last I have finished my detailed page on the Lazy Susan bearing mod, which I have added to my Skyquest XT Mods page in my web site......

XT Mods - Addition of a Lazy Susan turntable bearing on Orion Skyquest XT telescopes

My page provides lots of photos, and detailed explanation of the procedure, and discusses some of the concerns raised on this thread.

Hope some folk find it useful!

Best wishes
Jim