2014 Cascadia. Wont Charge past 60psi

2014 Cascadia DD13 10sp

So, this truck got a brand-new air compressor last year installed.
Ran just fine. I put the truck down and haven't run it for a few months.
A few days ago, I go to start it, and it won't build air past 60psi. So just because, I replaced the dryer and dryer filter. Still not charging past 60psi.

I removed the main airline from the dryer that goes to the compressor, its pumping air just fine, can't hold my hand over it or anything. Found the airline going from the dryer to the air tank, pumping air just fine, can't hold the air back with my finger. Checked the tanks for water, had very little in them.
No audible air leaks that I can hear.

What am I missing here?

 

except the only thing that is moving is the brakes. No bags airing up, no seat, no cab bags, not enough air to shift the transmission. Can only release the 2 brake pods.
Ive walked around the truck, crawled under it with the truck on and off. I dont hear any leaks anywhere.

 

I just replaced it a few hours with a brand new one along with a brand new dryer and filter.
Doing the exact same thing as the old dryer and governor.

 

I had let it sit for an hour with nothing building past 60psi. and I will say it builds up slowly to 60psi. Thats with it idling at 1500rpm

 

It does nothing. Just keeps running. No purge, still trying to air up. I will add that it builds up to 60psi very slow and that's with high idle between 1100-1500rpm.
But if it was the unloaded valve, wouldn't it not be pumping air out from the compressor? The compressor isn't even a year old.
I've checked all over for air leaks. Checks airlines, bags, air chambers, inside the cab, all the way under the cab with the truck on and off.

I know it has to be a stupid simple fix.