Glad you like your Ramblers.
I had thought about buying compass, but after hearing multiple reports like yours, I think I'll stick with the ramblers.
Those Compass tires were not designed to be tubleless, and as best as I can tell they just put a not stretch bead on it and call it good. Jan doesn't like tubeless, and is only doing it because the market is kinda forcing him to.

Personally, with a tire like that, I set it up with a tube, ride it for a week or two to ensure it stretches, seats, and takes its shape properly. Then I remount it using a skinnystripper to seal the tire into a psuedo "tubeless" tire so it can't blow off or burp. That has worked for me on iffy tires, but maybe I'm lucky. Ultimately I think it depends a lot on the diameter of the tire and the wheel (which are NOT standard).