Rough Idle After Stock Cams

Having an issue gents I removed my tuner and aftermarket cams and put it back to stock. It was stumbling a bit upon acceleration and sounds a bit like it has reversion, once u nail the gas it goes hard and power is good , just on low rpms it sound rough. I just removed the valve covers and went through the cam sync procedure. It’s perfect! I am at a loss, anyone run into this??

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