I got a response from Xenarc, just thought I would pass this info along in case anyone else runs into my same problem:
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Unfortunately, the two panels are not compatible. Currently, we do not have any replacement touch panels available. We will contact you when we get them in stock.
Price for the replacement touch panel should be the same as the 700-series touch panel, $45.
Xenarc Technical Support
support@xenarc.com