Epmp 3000 New Horn Antenna and Beam Forming


I have about 10 Epmp 3000 with the New Cambium Dual Horn Antenna, but the AP Is not making the Force 300 groups. I replaced One antenna for the 3000 4x4 sector using same AP and is making the groups

Tried Software 4.5 and 4.5.4

Any ideas?

Thanks in advance.

Basically Dual Horn is an equivalent of Sector antenna from MU grouping perspective.
An installation issue is suspected for the described issue.
Please check pigtails between ePMP 3000 and Dual Horn. Sometimes overtighten connectors are broken.