ePMP AP 4600 cover problem

I cannot use the Cambium sector antenna for several reasons.
On the antenna tower there are several FM and UHF radios and Dvbt transmitters with a total power of several kW. There are also many different devices whose TX is several W each. Whatever the sector antenna is, that RF penetrates to the first transistor and turns it into a mixer (catastrophe).
Waveguide horn antennas, by their construction, have a lower cutoff frequency so that nothing below 4 GHz (plus/minus) goes through the waveguide. All that I mentioned works far below.
Otherwise, I use antennas produced by the Swarg company.
The antenna has a complete mounting kit for Cambium, it is robust with perfect H/V isolation, excellent FB. Designed for 5.9-7.2 GHz
I have a problem.
In the ePMP AP 2000 series, a cover that covers the RPSMA connectors was delivered.
Why don’t you ship such a cover with the ePMP 4600 series?
Very difficult to protect against water ingress and from what I can see those screws on the RPSMA are not very tight. I have to have some kind of cover!
Not everyone uses Cambium antennas!
Is there a place to buy that?
Best regards