In my experience, it does work as a temporary fix, as does Vineyridge's suggestion of grinding them off with a Dremel.
I have an absolutely lovely TB, who packs around the beginner kids up to 3' foot. I ADORE him, and honestly, he goes best in a Happy Mouth Mullen, and probably will forever.
You just have to recognize that if you have a horse that's going to be in any kind of Happy Mouth bit long term, they're not maintenance-free bits.
You have to run your fingers over it on a regular basis, and deal with the sharp edges and tags. Eventually you'll have to replace the bit because they wear out, but that's just the way they are. They're just not metal!
reay, where'd you get your Sealtex? I haven't seen it in any saddleries, but I can order it online if I need too.
I'm thinking I've gotten mine in random places traveling...possibly one at the Judy's in Franklin. I can look in my trunk and see if I have any and if I do, I'll bring it to you when I show you the saddle. I doubt I will be needing it for a while.