If you are not running the CTIES system, I'd cut the wheels and run tubes.
I saw a 3/4" wide slot from the stem hole up to the hole in the ring that the stem used to go thru. Add a radial tube & flap, call it done.
I have never been able to keep a full set of 6 inflated more than a day, and most of them in the NG lot are sitting down on the rims as well. I've tried new )-rings, silicone, you name it. They just leak.
I usually take a small grinder and run around the inside of the tire bead area removing a tiny amount of rubber so they will let me pull the ring without a lot of grief.
dg