Kakute F7 Copter 3.6.10 VS 3.7 issues

Hi all,

I’m setting up a build based on:
Kakute F7
Holybro Pixhawk 4 GPS&compass module
Tmotors F55A PRO II

I have the following behavior:
With AC3.6.10 everything works ok, except the Smart port telemetry, that is not possible to have with 3.6.10 because the SERIALx_OPTIONS is not supported.
With AC3.7 I have the telemetry working, but I can not get the compass and LED working (it seems to be an I2C issue).

Does anyone using the Kakute F7 have this behavior in AC3.7?
Any help will be appreciated.