Can you attach the xml, also have a look on the diagnostics page and see what the frequency DRO says.
Hood
The only freq I see on the diag page is Pulse Frequency which shows "external."
Attached are the original copy and saved, as modified by Mach.
I'm having a heck of a time uploading those bleeping files. It tells me that it already has a file with that name
so I changed it to saved540.xml and orig540.xml, then retry, but it won't upload. (I love forum software...)
OK, trying LJsaved540.xml and LJorig540.xml