I set min initially to 4 to 6 deg BTDC, initially. The closer you get to TDC the hotter the CHTs get. I think the idea is to fly at 4 to 6 and see what kind of CHT margin you get. Advance towards TDC incrementally, one mag at a time (so you can switch between then to check chts). With 1 Pmag I think you just leave at 4 to 6 deg BTDC.
Jumpers out (2 pmags) is a different beast, but the pmag guys will walk you through it.
Kurt