Usually the sales number is for distributors. If you have some sort of technical question, you could try the "industry" sub-forum under Bicycle Mechanics.

The website lists two addresses:

Sales Office: 1061 S Cypress St, La Habra CA 90632 800-586-3332 ksicalifornia@sbcglobal.net
Factory: 5700 Willow Lane, Lake Oswego, OR 97035 503-636-4673 KSIOREGON@aol.com