Hi John,
The only in-field adjustments we have are for the BB60C 10MHz timebase. For the BB60A, the unit must be shipped back to Signal Hound for adjustments. We can re-calibrate the device and ensure it is within operating specs. I believe it is a flat fee. You can email lori at signalhound dot com and ask for that information.
I apologize for the inconvenience. Glad everything else is working out okay.
Regards,
A.J.