Usually between weeks i use a brush serader to redface the brushes and keep the motor fresh. Motor spray wont harm the brushes.
I usually go 2 to 3 comm cuts on a set of brushes. just watch the length and the color if the get redish or bluish replace them.
The Skid Marks -- 24 Heures Du Jackson 9/22-23/2011
"Go for broke or go home broke"
"If it ant broke your not trying"
Alex "ACE" Kubilus
ACE design works