Another 302 question...

I just purchased a ship with a 302 installed and have a question for
any 302 owners out there. When I turn the 302 on, it goes through the
normal boot process; zeros the needle, sits at the serial number/
firmware version for 10 seconds or so, then goes to screen 2. The
strange thing that happens is when the bootup is done and it goes to
screen 2, the needle goes up to around +1 on the dial and pretty much
stays there. It moves up and down ever so slightly, but does not go
back down to zero. Has anyone seen this behavior in their 302? Is it
normal or a malfunction?

I have not flown with it yet, so I can't comment on the operation
while flying.

Thanks,
Dave