Replacement TV roof antenna

[MarkEHansen]

We have a 2019 Cougar Half-Ton 26RBSWE and the round "flying saucer" TV antenna on the roof is very wobbly, and there doesn't appear to be any way to tighten it down. The "mast" is secure, but the saucer on top is loose.

I'm not sure, but I thought I've heard these are notorious for having this problem. I'm selling the trailer and would like to replace it, and to make the mounting easier, I would like to just replace it with a new one of the same model (so the mounting holes will match, etc.). However, I can't find one anywhere. Can anyone provide a link to one I can purchase?

If I have to go with a different model, are there any suggestions? How difficult will it be to install it. I'm wondering about dealing with the original mounting screw holes and what to do with the wires/cables.

Thanks for any advice.