I'm new to tubeless, too, and still carry a tube and patch kit out of 'old fart' habit (plus tire plugs), which I guess kinda defeats the whole purpose. The advantage I discovered last week was getting a rear flat OH MAN THIS SUCKS, then after watching sealant spew for a few seconds, it stopped and I finished my ride. Amazing! Added 20 psi back at home and all is good.
Yes you can stuff a tube in there, I wouldn't worry about scraping out sealant unless it's really gooped up. I recommend watching some YouTube videos about installing tubeless tires instead of taking it back to the shop. It looks like kind of a hassle but realistically isn't much more so than installing tube tires, we're just used to the latter. You'll get your tire resealed and will be up on how all this works. I haven't done this yet, but need to. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
