Hey guys . Some times you may have to divide your fibermesh to more parts . Setting up multiple hair modifiers is a very time consuming process in 3dsmax . i wrote a script that can speed up this process .Also you can Change all your hair modifiers setting at same time.I hope it will be useful
you can see the process in this video :
https://www.youtube.com/watch?v=Csa4G90_IWM
https://www.facebook.com/reza.asaie
great !