So, WSJT-X 1.16 has been a nice upgrade feature-wise now that it includes WSPR mode.

Here's the problem - Previously, using WSPR 2.1, all frequencies were spot on to the Hz with my phase locked IC706's. Life was good. Now with WSJT-X 1.16, TX accuracy is still spot on, but RX's are reading low by 10 Hz :(

This new problem only happens on my iMac running XP under Parallels - all other machines (also XP, but on various laptops) using 1.16 are spot on.

Is the a calibration menu that I'm missing or a file or something that I can get at to correct this problem?