I just got my primary back from Cascade clutch balancing. Super happy with the way it came out. Sheaves look brand new and the thing is butter smooth on the sled. $95 to balance a primary, fast turn around even this time of year. Dave (owner) is a super guy to deal with and is out there to help people out. I would recommend it to everybody.
http://www.cascadecp.net/Cascade-Balancing.html
http://www.cascadecp.net/Cascade-Balancing.html