SteveJ,
That's some good info there. I assume that as you had put you Ignition timing back to stock, that you had issues? Your place is down low near Sea Level?
Loss of cylinder pressure is a problem at this altitude. It has a history of Turbo Charging, still popular, but not like years ago. Modern engines of course make much more power than the older stuff.
When I was in the Valve adjustment part of the Initial maintenance, I took note of the cam chain layout. Unlike my KZ the ZG has a much easier set up to Degree the cams. The KZ has a slipper block for the top chain guide, in the valve cover, once the valve cover is removed, then no chain tension etc. A tool to mimic the valve cover needs to be installed.
More cylinder pressure is a good thing, especially up here. If I reset the ZG cam timing, and want to re-jet, etc, I have that capability. But unlike my younger years when Gas was cheap, I don't want to drop the mileage, I want to increase it, if possible.
Performance of the ZG is already decent, while more, as a rule is always fun, where do you stop?
This particular bike is not going to be a Crotch Rocket bike, as long as I own it.