that is fair. Only singling out Kawasaki because it is what my wife has and what I am building her for the replacement, so more recent experience. At the same time, my current Suzuki Bandit is much easier. Two screws and the air box comes off, simple to pull the carbs. No coolant draining to adjust the valves. definitly not a challenge to do shim under bucket. Just a hassle. Been way too busy lately to re-time engines. Never have really liked keeping full shim assortments on hand. Even when I do, there is always some size you run out of when doing enough of them. Mostly, it just feels like un-nesesary hassle for a street bike. I am putting over 10,000 miles a year on my bike. My wife is putting nearly 10,000 miles a year on her bike. The kids are in that range and I help them on valve adjustments too. Starts to turn into a valve adjustment every 1-2 months. After owning the Harley with no valve adjustments The airhead with 15 minute valve adjustments And the ducati with 1 hour adjustments. Pulling all the fairings, gas’s tank, draining coolant, pulling the right motor mount, all before I even know if it needs shims, then I have to pull the camshafts and measure to see if I have the right shim. (Of course no local dealer carries shims) (no dealer can even get me the valve cover gasket in less than a week if it has a crack) then re-time the engine, and reverse assembly every 9000 miles, just feels like too much hassle for a street bike that will never need that tiny amount of extra power or RPM that this hassle made possible. Just do it like the ducati opener, and make the rocker slip to one side after pulling a clip. Of course then you need rockers. All the car engines with buckets just use hydraulic buckets these days. Again, for a street bike, why not?