2003 Polaris Deep Snow Snowmobiles Service Manual, Page 225Get this manual
BODY AND STEERING Carbide to Ski Placement
A good starting point for placement of carbide is 5050 (50 forward and 50 behind the ski mounting bolt)This can be varied depending on the aggressiveness of the carbide and the strength of the driverMake sure the leading edge of the carbide has small chamferMore carbide trailing will cause the machine to track straighter, but steering effort will increase