Here are a couple of Tach readings from my YS110FZ. The engine only has 1 gallon of fuel through it so far:
All are with Cool Power 10% with about 3.5 oz of Synthetic lube added. Hey, it works great for my application, and idles very well also!
All are flying needle set RPM's, and tached on the ground of course There's a fairly heavy trail behind the plane too, so I would say the figures are at a rich setting.

Zinger 16x8 wood cut to 14&6/16"= 8.4K
APC 16x8 pattern prop = 8.0K

More on the way in due time...........

By the way, what's your YS110FZ throwing your props at?
Dennis