Does anyone know how Mesaba's PBS system decides if you are going to be assigned a reserve schedule vs a line?

The line it built for me for August was only 11 off! (Saab FO msp) I figure that if I'm only getting 11 off, I might as well take a reserve or highspeed schedule. Anybody know of a way to work the point totals such that you will get a reserve schedule if you have less than 12 days off for a line?

For those of you who don't work for Mesaba, does you're PBS system let you do this?