I don't think a simple gasket replacement would cause this issue. But it's possible something was dropped into the head. The torque of the VC bolts isn't critical if you are not getting leaks, it's probably not an issue (i've never used a torque wrench on them). Could it be that you just now noticed the ticking while working in that area?
I would level out the car, check the oil level, and try it again. If it doesn't go away grab your feeler gauges, a service manual, and inspect the valve adjustments.
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