Open Solo 3 - Mag/Level problem

[Pedals2Paddles]

I was looking at this guy:
OpenSolo/ardupilot-solo
Not the same thing?

The parameter is updated on boot when ArduCopter reads the smart battery's reported capacity. So something is wrong with your battery if it never changes from 5200.

 

[Robpower]

Pedals2Paddles, did a parameter reset and set up again, same problem. I decided to do a full reset of 3.0.0 and tried again, same thing. Is it possible it is a weight problem as its slightly heavier than a gopro and gimbal?

It does the same of my other 3.0.0 bird but flies fine on 2.4.2 bird. I know you said they are the same, is there a way to go back to 2.4.2 just to see what happens?

I have cleared the 3dr app cache and downloaed 2.4.2 but when I connect the controller and bird it shows 3.0.0 (which is correct) but wont let me go back to 2.4.2

Keen to sort out and happy for help