I got a new 2nd hand bike for MrsOC on Monday, the tyres were pretty old and needed replacing which I knew from the start, and the bike had never been setup tubeless.
Ordered some tyres from CRC, along with valves, delivered to my work yesterday. Got home, and within an hour I had taped both rims, inserted the valves, and got them both holding pressure, admittedly I used my mates Airshot type thing. Hans Dampf on the front went up first time with some lovely pings, no water or anything, HR2 on the back took a couple of goes and a sprinkle of water, but went up.
Came down this morning and checked them and both held pressure over night. Will be properly testing them tomorrow.