After emailing around, it seems to be a costly and common issue where the dial contacts break or wear out. The difficult part comes from getting to the dial which requires freeing the PCB from a nest of wires and soldered on contacts. According to one person I talked to, a "donor" board is required to fix the problem but unless the issue involves some sort of proprietary or obsolete IC, I don't think that would be the case.
I found a dead link to a site with visual guide to get into the 1014 XL-S and (sort of) how to perform the repair. Fortunately it was archived and I could visit it with the Wayback Machine.
Here's the link in case anyone needs it: