The tyre was tricky to get on a Campag Omega, and it simply won't come off it! The bead is so tight and stiff I've broken 2 tyre levers. I'm going to have to buy steel levers tomorrow, which will mark my rims most likely.
Good job they're so hard to puncture because taking the tyre off by the road would never happen.
before resorting to metal, have you use Pedro's tyre levers?