Hey. Anyone else have problems with an extended thumb? I'm trying to bend it but some things I play are really painful and high tension. For example in Lisas lesson regarding power chords and the song Can't Do Everything - my thumb is in a lot of pain. It's frustrating because I'm comfortable with the theory and playing - my thumb just has so much tension in it.

I'm double jointed and think this may have something to do with it..

Also I have a classical guitar Yamaha C70, so the frets are very spaced apart.

Thanks! :-)