I've been working on bike and car engines since the early 1970s and I don't remember another which "officially" needed the valve clearances checking as often as this one apparently does. Hopefully it will prove to be just a "check" rather than a "check and adjust" and people can be a bit more relaxed about it with experience.
Unlike my "Home market" 350 Bullet which had a very soft exhaust valve seat from new and recessed so quickly that after 100 miles or so there was hardly any compression worth talking about and it would just die then be impossible to start. Which is probably why it had 4 previous owners and only 3,000 miles from new before I bought it! I got very used to adjusting the tappets at the side of the road and could do it in about five minutes... at least access is so easy on that engine
Now it has a hardened valve seat and one of Mr. H's stainless exhaust valves = problem solved! I haven't had to adjust it in 5,000 miles and when I checked them a couple of weeks ago it's still as I set it last year.
Built like a gun... could go BANG!