Toobin PCB sending no Blue?

Just got my chasis back from chad @ arcadecup and got it back in the machine, fires up well and pic is looking right except there is no blue. I crank the blue cutoff and drive and I can see blue on the whole screen but not in the test pattern specifically so that makes me think the game PCB is not sending blue to the monitor.

I checked the pcb to monitor chasis for continuity and its fine so I guess its a component on the game board?

Still totally playable but would love for it to be tip top.

What do ya think?