Can't find the part number for replacement carbides for the stock skis on an 06 440 IQ.

I went to Royal Distributing (similar to Dennis Kirk) and they had carbides that would fit but only used three of the four bolt holes (the very front bolt hole was not utilized).

- Does anyone know the Polaris part number (looked in parts manual and online - shows all ski parts but carbides)?

- Does anyone know if the stock carbides did not utilized the front hole (I suspect this would result in bent carbide host bars)?

- Are these same carbides found on other sleds that I can look it up?

Thanks,

Dave.