I got the drive unplugged and also ditched the numeric keypad, the screen isn't jittering anymore but I've noticed the video isn't the best anymore...one side seems higher than the other (though that may just be a yoke that needs adjusted).

I have an extra Plus that I've never booted up, would a transplant of the analog board solve my video problem of distortion if it's not the centering of the screen provided the Plus is good (It's a platinum Plus so I'm thinking the supply should be better in there).

Alternately, is there any way to modify this Plus inside so that I can put an SE/30 and its guts inside this case?