I have the Blackburn booster pump. I have gotten a great workout pumping up that cylinder over and over and over again, yet I have had to take my wheels/tires to my LBS every damn time to get them to mount, and even then they wrestle with them. That's with WTB tubeless-ready rims(WTB asym i23p 650b), and several different WTB tires on my gravel bike. One thing that may be a contributing factor is with the Blackburn you have to keep the valve core in--there's no pump head for it that allows you to use it w the core removed. But I tried w the compressor at the gas station w the core out and still had no luck.
On the other hand, I'm beginning to think it's just that these rims are not so great. You'd think the WTB combo would be foolproof, but apparently not. They came stock on a $1600 bike, maybe they're just sort of "entry-level" and I need better rims . . .
Last edited by pbass; 08-14-22 at 09:11 PM.