Barre Chords and the A13 Chord

This is a 4.75 minute video response from David MacKenzie on Nov 1st, 2008

Question:

"Midnightryder29 asks "I've been taking d mac's basic guitar lesson's. I'm learning a lot. I watch the one on basic notes,chords, arpeggios and I was trying a A13 cord but the bottom string or 1st sting keeps coming up flat. I was just wondering if you have any suggestions. Thanks keep up the good work."