IPP Always showing 100%

I am using SNMP to get stats on my printers and ink levels. Working good other than HA complaining about the mass of SNMP requests I have and delays and the like. So I say well here is this IPP thing that came up last update and thought maybe I could reduce some of my SNMP requests. But it’s not reporting right. You look at it here is my ink level with SNMP:

image

And thru IPP it never changes from 100%. So take the Magenta at 97%, for IPP it shows:

Yes it’s updated over many days and the printer is always on. Thoughts?

No thoughts on this one? Came back to revisit it as HA refuses to stop asking me about a new item being discovered no matter how many times I dismiss it.