Hello,
You can use the " INFO " button to monitor different CC data comming into the JV, so you'll know if MOD is being sent or something else. You may also want to adjust your AXION to not send CC's, then see if it still happens. If not, enable each CC, one at a time, till you find the problem. You can also stop some CC from being recieved by the JV from the " SYSTEM " menu.
Take care
Mark