I discovered the go low pressure in part by accident and in part by having friends and acquaintances who are in the bike industry and test where I've been a trail steward. Even with tubes I've learned to go lower. It amazes me to realize how wrong bike design and things about tires were.Mine are not the thicker + versions, but the standard SK. I was going for weight savings over my stock Giant Crosscuts.
Discovered running lower pressures by accident. Had been riding around 40 psi and was in a hurry one day to ride and didn't top off my tires. During that ride, I noticed that the gravel felt much smoother, and faster too. When I got home, I measured 28 psi in both tires. Has been my go-to pressure ever since.
@Honga Man - I hate to hear you are having these issues. Will the bike shop you bought the wheels from work with you on switching the rims out for some that have a known good tubeless compatibility?
@chris m. strikes a chord here. I got the GravelKings because some Bontrager GR1s that were surprisingly good had defective replacements. I got the GK in the interim. I don't dislike the Schwalbe but have found some less expensive tires that have been fantastic. I rolled every bit as well as friends with the G-Ones and found the edges of the GR1 superior when leaning. They were almost $30 less than the Schwalbe, still $15 less. I might try Challenge Strada Bianca that are expensive part for the good reputation and part for the guy who runs the US operation being a fellow local trail steward.
I'd like to try Tufo too but my Trek warranty replacements are waiting for me and I've had enough tire f*ckry this month so will keep going with the GKSS+.
For @Honga Man woes, I know the Velocity rims have a good reputation and there are SO many tire choices these days so hopefully something works out well. I've had good Velocity rims but not any made for tubeless.
I feel very over the days when I liked to have more exotic hubs and rims and experiment. In recent years I've had good luck with WTB OEM and some we built as far as aluminum, anything DT Swiss I've had, and I got Bontrager composite because of a good combo of US labor, price and Trek's generally outstanding warranty. I've had none of the problems friends have with more exotic stuff. White Industries and DT have served me well.
For the amp people, Mesa Boogie and White Industries are neighbors.