Hope the cam chain guides & tensioner cure the tap.
Keep in mind that all 12 tappet buckets fit in holes that grow as the engine heats up. Anyone could be just a little small for the bore and make a noise. 10,000'ths of an inch tolerances can make a difference. Could be a lot of other things too. Most noise is harmless, but I can't hear your bike. Ear plugs are a beautiful thing!
Good luck