Some years ago I got a puncture at work so got a can of Walmart tyre seal and inflate, seemed a good way of getting home as it was only 15 miles on the freeway. The tyre lost air and the slime all the way home and was almost flat although I did only travel slow. The slime cobweb was all over me and the bike and 5 years later you can still find bit around the spoke nipples. Took it to the main dealer for repair and he was less than impressed as that stuff is nasty to handle so outdoors with rubber gl;oves was needed. Would I use it again, only if I was absolutely desperate and it had improved a lot. Could just be that walmart slime is rubbish. Have you signed up for the dent run? Should be the biggest america / speedmaster get together in the UK