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@Squaredisk
Had a flat on one of the hermetic tubes. Noticed the rim tape (crappy plastic shimano rim tape) was all bunched up near the valve opening. Inspected tube and there is a cut at the base of the valve where it meets the rim opening. Not sure how this could have happened or if the tube can be repaired as a patch is not going to sit flat on that area.
I'm going to inspect the rim valve hole to see if it is rough enough to slice the tube and buy some new velox rim tape that might act as a buffer between metal and inner tube valve. 🤷
Another thought I had is if it due to putting on the threaded valve ring, maybe the tube moved somehow(?) And the valve ring trapped it and caused it to tear?