I am just wearing out my first set of tires with the Neutech tubeliss. I have discovered a problem with this set up. My knobies are starting to chunk and the tire is leaking wear the knobies are tearing. I am running a Kenda Washougal. Has anyone else experianced this? Will all tires leak when the knobies start to tear? Will slime work to seal it up so I can continue to use this tire? I know I should just replace the tire, but I dont race and would prefer to run this tire a bit more.