Jen Shinn Chassis and Grounding?

[FlatEarth]

I have replaced the tube and chassis in my Galaxian cab with a new tube and Jen Shinn chassis, the one that does not need the separate isolation transformer (it has one on the board).  The old WG had a ground lead from the frame back to the iso transformer along with the power supply, but the JS only has a 2-prong plug and cord to the board.
Should I be worried about grounding the frame on this new monitor?  If I need to add a ground lead, where should I ground it since I am not using the iso transformer any more?

[lilshawn]

anywhere metal on the frame of the monitor is fine, just ground it to the same place the original was grounded.

all the grounds are tied together anyways.