Well, it flies.
I leaned the low end 1/8 of a turn and it ran much better, though still loaded up if let sit at slightly lower than mid range for too long, as I found out on the second flight. Luckily our field has lots of over run room, not runway smooth, but smooth enough for emergency landings.
After the first flight, whilst the engine was still hot I noticed some noise in the bearings so will replace them tomorrow. So if someone could post their method of bearing change it would be much appreciated.