Outlaw 500 cam help.

I just need to know if im screwed or if there is anyway around spending lots of $$$. I did a trade with a guy on facebook to swap my kx450f for a outlaw 500, at first i thought great trade. But no, it started not running right after a ccouple hours and judging by online Forums it seemed like my valve needed ajusted so i opened her up. Well then i discovered something failed and got between my cam and head wearing a grove where my cam rides on the head. And now it turns very rough, not smooth like the intake side. Am i screwed and have to buy a new head or is there a way around that?

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