GTS speedo, analog display shows always rpm

I have Vespa GTS 300 -13 and I just installed SIP-tacho/speedo MV91402BJ.

The problem is that the analogue display shows always rpm's, so pressing over 3 seconds the right button will just change the digital numbers to show also rpm's.

This is really annoying and totally unnecessary to both are displaying same parameter.

Has anyone any idea how to fix this?

 

Best regards,

Kari