More with the Vax 11/750

Now that the Vax is in the basement, I've been cleaning and checking it out, trying to address what problems I can. First and foremost, there is no key. But, I found that I could pop out the control panel from behind, and that contains the actual turn switch - the key is just the knob that turns the rotary switch. My bright idea was to simply remove the key mechanism for the moment, so that I could turn the machine between modes with a modified television knob or something. Simple - just remove a large hex nut collar from the back, and slide it out. Unfortunately, as it slid out, it ever so slightly caught the edge of the plastic overlay for the control panel, and left a little light colored mark around the bottom of the hole where the overlay isn't sticking to the back plastic, and has air under it. Nothing that affects the functionality of the machine of course, but it ticks me off, since I caused it. I can't think of a way to fix it without causing more damage, however, so I'll just have to live with it. Now that I can switch the machine on (once I get confirmation on the orientation of the power controller connector, see previous post), I should soon be able to test run it. One thing that needs to be addressed first, is that this machine must have originally been fitted with an external unibus expansion box - there is a large flat white cable inside, connected to a paddle board on the last Unibus slot. This cable was cut with scissors or something where it exits the cabinet. I have removed this, but I will need to install a Unibus terminator, correct? I should be able to steal the terminator out of my 11/84 for now - are they the same, or was the Vax Unibus a little different? -Ian