Nice pics and thanks for posting.
A 200cc CB is a 200cc CB but you can optimize what you have with relieving intake and exhaust restrictions. It also needs to loosen up a bit.
Valves on these little aircooled bikes make some noise. If they are correctly adjusted they are correctly adjusted. I assume you changed the oil from the delivery soy sauce they ship these engines with?
Enjoy the ride. I am jealous. :oops: