Yeah I think it should be too rich but if I lean it a little more it seems to hold the rpm after full throttle. Unless it holding rpm is a LSN issue?
This engine is confusing me quite a bit, might try and find someone local who might be able to help me with it tho don't know anyone at the moment. But think it would be easier for someone with experience to see it in person then me trying to explain it which I don't do very well.
Edit, to add when I was at your settings the performance was a lot better but seemed to be too lean as it was holding rpm and sounding buzzy after letting go of the throttle, to get rid of that I had to go this rich but now it is very boggy and rough sounding, after a couple of tanks it got up to temp I guess and did lean out. Unfortunately I wasn't able to see what it was like too much after this as I had to stop.