Fix bug when setting BPI of track 1 and 2

Per the Programmer’s Manual the BPI of track 1 and 2 were being set incorrectly.
![screen shot 2014-12-29 at 2 33 06 pm](https://cloud.githubusercontent.com/assets/828153/5572711/c18ac994-8f67-11e4-84d2-27720b1e662b.png)