My LBS fitted me some slime filled inner tubes and armoured tyres just after Christmas. Whilst it has been great to not be visited by the puncture fairy since then. I can't actually blow the tyres up now as the slime has gone into the ends of the valves (god I hope that's what they are called) and they are all seized up and I can't unscrew them to fit the pump and blow them up. Has anyone else had this problem? I also purchased two inner tubes to fit myself to the mountain bike and I noted that these have done the exact same thing!