WI: British & French negotiate prior to French & Indian War?

Could the British and French have successfully negotiated a mutually acceptable boundary before the breakout of the French and Indian War? (I'm thinking along the lines of the one in the 1750 mapgame).
 
They could have — although I'm not sure what difference it would have made. As soon as the Seven Years' War started both sides would have tried to adjust this border by force. (The "French and Indian War" was nothing but the North American theater of conflict in this war.)
 
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