LMT (.308) gas blocks are pretty much pressed on and will likely not be removed. It sounds like you've figured this out.
Also, the gas ports are not like standard ports in that they are drilled at an angle, not 90 degrees to bore. Supposedly this is done to cut down on gas port erosion. I'm in the same boat as you because I'd love to shoot mine suppressed, but it's WAY over gassed with the can.