2018 Mustang 5.0 flex fuel

[z28demon]

has anyone done a flex fuel on a 2018 mustang 5.0 . I am doing mine and it is reading the alchohol good and has switched fine between both fuels but I keep getting 2 codes . p2097 - p2099 post catalyst fuel trim system too rich bank 1 and bank 2.

I don't know what I am missing . anyone have any idea or info on this.
I have attached my file . another question is I see on the older coyotes there was a table for flex fuel spark but I don't see it on this one.

[z28demon]

Didn't notice I posted under Ford ecoboost section can I get this post moved to the non ecoboost. thanks