Don’t worry about MF % too much. As long as you are over 100% mf you should be fine. MF is not that big a deal. Especially for Pit running.

Priority for Mfing the pits according to Kockblocker1:

1. Kill speed
2. Find the pit fast (use maphack)
3. Move fast (teleport/FRW)
4. MF


3 minute pit runs with 100% mf > 6-minute pit runs with 500% mf