Morningstar charge controller

[RoamingKat]

Lately I have watched my Morningstar is showing low amps when the battery SOS is showing 13.4   The Morningstar is claiming 14.0

I keep wondering if it is the solar panels that are not delivering or the Morningstar that is acting as a damper to keep the amps low.       

Wouldn’t the charge controller keep the amps low if it thought the battery was full at 14.0?  But..at the same time it shows the sos at 13.4

Or...are the panels just not delivering what their spec says they should.    2 panels with 700 total watts.   
Yeah, I get that with the sun so slow in December it isn’t going to be very impressive....but...3 amps at noon?   

So, the question is...is it the panels failing to deliver or the charge controller limiting the amps?   How do I tell?

Oh...this is LiFePo4 batteries.   I understand that at 13.4 I am probably up around 85-90 percent full.....but, it seems that this system cannot/will not push on to 14.0 sos.