Two Glees, One Valve Tick (funny sound)

The idle rpms of the 2014 seems higher, correct? Does the tick go away if rpms are raised some?

If that is not it a valve check will tell you if there is anything amiss with the cam chain or if there is something wrong with the valves themselves.

It does sound mechanical but others have been fooled by a very tiny exhaust leak from the rear header. Take a piece of hose and put one near your ear and move the other end to various points around the engine and see if you can localize where the sound is coming from. Also, valves tighten over time so it is not the valve gaps but it could be something wrong with the cam chain or tensioner as @blaustrom mentioned.