Well, didn't find "Slime", but I found what must be the same stuff at Sears ("Tire Sealant"). It's even green. Says it's for tractor tires, wheel barrows, etc. I'll give it a shot. Maybe I'll just pre-emptively put it in all the tires, since I'm mowing down a lot of multi-flora roses, and besides poking holes in me, they probably got the tire too. Starting to wonder if I should have gotten the R4's...
- Patrick