ARAM Champs Repeating?

Of my past 30 games in ARAM, I see a trend. Udyr and Kayle stand out as popular monsters for me in ARAM. There are 5 Udyrs, and 4 Kayles. There's a few other repeaters, Nautilus, Cho'Gath, Blitzcrank. I think I swapped for one Kayle but never for Udyr, that I can remember. These champions account for 15 of my past 30 games. That's HALF of my ARAM taken by 5 champions. I have 40 champions. Why am I getting the same ones over and over? Of my 4 ARAM games today, 3 were udyr! I don't go more than 5 games without seeing one of the names here. I'm just annoyed that I keep getting such a limited number of champs when theres 30+ other champions to choose from "randomly".

Please note, I do not swap typically for any of these champions. While I enjoy them all, I don't trade super often in ARAM, so I doubt this had an impact. I think there's a bug in the "random" algorithm.

Another couple of players have complained of getting the same champion over and over in ARAM as well, which is why I thought Riot should take a second look at the "random" algorithm for bugs.

GLHF, Jcwolves