Imaging with Volume Licenses

I have a unique issue happening with my Office 2016 Standard volume license. I created an Windows 10 Pro image with the Microsoft Office 2016 Standard volume license already activated on it. However, I have 3 pcs randomly saying they are not activated but the rest are working fine. Should I be installing Microsoft Office and activating the license before imaging or should I keep it off the image and just manually install it after the base image is done.