I tried the AM mode after installing 15.13 with wonderful results. The only problem is that when I transmit in AM, the monitor function activates automatically. However, the MON box stays gray'd out and I can not shut the monitor off. The monitor function works properly in SSB.
Check the other posts re: receiver feedback on TX. It is a bug that has to do with transmitting on Slice B when the frequency is too far away from slice A. FRS reported that it is fixed in the next upcoming release.