In that case have you tried a plug chop under load to assess the fueling? It is a bit of a faff to do but it is the best way to see how the engine is burning.

Might be worth posting a video of the exhausts running as well? before and after warm.
Your idea of smokiness could differ from mine for example...in the end I would always point you back towards performing a plug chop though, it is the only safe way to know you are running the bike rich enough.

Good luck