Did you ever find out from the dealer? My 2018 bought brand new with now almost 1k miles has done the noise since day 1. My warranty runs out next month, trying to decide if it's something they can actually fix.
I am completely new to this video uploading thing so I hope this works here is the ticking that has caught me off guard I have double checked valve clearances brought exhaust valve to 0.004 of an inch checked oil levels checked the galley screw adjusted the idle screw to 1520rpm and filled her with fresh gas. No change so far. It’s going into the dealer tomorrow for another look.
I've done all maintainance, tightened valves to spec, oil changes, the works, but no real change for me.