Extremely low 3s power (5-20W) Rally RS 200

Hi there,

I got a brand new RS 200 and after mounting it shows overall very low power e.g. 5-20W for 3s reading on Epix 2. I have been using Vector S for 8 years and I have come across various issues with it hence I did following:

- used 1 supplied washer when mounting

- used torq key

- replaced batteries in both pedals after removing batteries for 30s from pedals

- connected to Garmin app, installed new FW, checked crank lenght, calibrated and reset angles

All the above always worked with Vector S when I encountered a similar issues and felt like an expert. Now I feel lost. Did I miss anything? 

Thanks