I may have found the fix, tonight's imaging will show it or not when I process tomorrow.
For some reason, all the other cameras White balance in the ASI software (I'm using NINA, so I don't normally see this) were set to Default 52/95
The one camera was set to 50/50
I changed it and the problem persisted. I rebooted, and restarted the camera and the change took apparently. I discovered this in compiling some sample images, I shot M5 from all telescopes and they looked the same colorwise, all had an initial greenish cast which is usually fixed by using SPCC. I couldn't use SPCC because I only shot one image from each camera. However, to the eye, and looking at the color in PS, they seem pretty much the same now. I'll let you know how it looks tomorrow.
Thank you!!