Hi Dan,
I have noticed this too on the 230 fence of my CF741. When i do, i pull both fences off and clean everything with a blast of air and a bit of a wipe and it tends to end up spot on again. Hopefully this will solve your issue, otherwise it sounds like a bit of an issue, since i don't believe there is any adjustment.
Regards,
Bryce
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https://www.brycecomerwoodworks.com/
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Bryce Comer