Beam Gen2 Setup Issues

Hi,

I’ve just purchased a Beam Gen2.  This is connected to my Sony TV to which I also have a Sky Q box and Nintendo Switch connected.  Beam is connected via the Sonos supplied HDMI into Arc.

I have a couple of issues that hopefully someone can help with:

1. When I use the sky remote the TV volume adjusts in jumps of 2.  These are odd numbers, so 7,9,11 etc - particularly annoying as I normally use 10 or 12 for standard viewing.  Any ideas how to achieve increments of 1 as I can without Beam connected.
2. The sound drops out and then returns completely randomly.  Never had this problem before.
3. How do I find where to do the “calibrate speaker to your room function”?  It appeared on my phone during setup and then disappeared when the Beam decided to update.

I actually purchased 2 Beams but based on this may be returning both!  The other Beam is for use with a Pioneer TV.  Really frustrating as my Play 5 (not connected to s TV) is fantastic.  Any help will be great.  Thanks.