Shawn wonderful to read that you're on a good way.
Around four years ago the theme about E85 was actual here in the LoS and so it was in the Ninja 250 Community and from that time I've found a video
Link to original page on YouTube.
Listen to the sound of the engine (Ninja 250-FI) with normal setup and then with 15% enriched and watch what the engine revs are doing. Also at least look for the last stage with 30% richer than standard.
The theme about E85 became more quiet now from what I see...