I seem to have contracted the same disease that afflicts Don and I suspect a lot of other MTBers - "Chronic Tyreitis"! I've only been at this for a "wet week" and I have about 12 new and part-worn tyres hanging around my garage ........ and I still can't change one without a major struggle!!
Mountain Bike Tyres!
throw them and tell them to fcuk off a few times usually works
This garage of yours, give me grid co-ordinates, I'm going to tunnel my way in from Newtown.
Don't feel bad. They just seem to breed/multiply in my shed.