Yeah, I'm with Stang. I have an Evolution .46 and in my manual it states the engine was broken in at the factory and is ready to fly. Nevertheless, I ran a couple of tanks through it before I took it up for its maiden. It actually had a decent reliable idle out of the box throughout the two tanks on the ground. Kind of like you, I taxied the plane around in my front street running it though its RPM range.

As in the post before, just make sure you lean it out for max RPM, then richen it a couple of clicks back (do you have a tach) and you'll be fine.