Bob and Doug,
Opened this time. I've had this jig for ~ 20 years. I've made lots of attachments for it. These days I pull it out of storage when the job requires repositioning the fence multiple times to complete the task. It's dead on accurate. The original, single piece fence was fine when I was making small boxes with tiny dovetails and box joints. Lately I've been making sort of contemporary furniture and the original fence is too small for the current applications that usually require large bits and substantial cutting height above the table.
That said, it's still one of the best jig investments I've ever made.