there is always the lighter fluid and match trick... but be very CAREFULL!!!

just kidding on that... that is a last resort!!! BEWARE!!!

okay... what kind of tire machine do you have... if it has the roller like low pro tire machines then seat the bottom bead in... make sure the bottom bead is not greased up... make sure it is dry - try sitting it in with the roller bot the bottom bead and once seated... raise the top bead tire so that you can blow it up and seat the beads...