Just service them your self.
FORKS! Are very easy to work on , i used think there is no way i can do that my self.
Now have serviced , monsters , boxxers , 888, junior t , dorado and so on.
here is a service manual
http://www.sram.com/_media/techdocs/95- ... 0Guide.pdf
Just take your time ,and clean the internals properly.