Hi Ken - thanks for your post man!
I'm not sure of the model on the monitor, I will have a look tonight when I go back over. The monitor has not been recently capped. It was working 100% when it was pulled from a Neo-Geo setup earlier in the day. As far as the sync, there are 3 pins at the sync area, and it only displays a picture with 1 setting. It just wont stop rolling. So I guess I can't actually say the sync is connected properly, though any other configuration makes it go haywire. This one configuration I have it in now settles the image, it just wont lock.