VPI balanced junction box installation


I was wondering if anyone has installed a balanced junction box on a VPI arm. I have the 10.5i and just got the new box in the mail. I can tell there are two screws/bolts holding the single ended box on but the holes are so deep I can't see what they are without turning it upside down. I'm trying to do this without moving the table (SSM) because I've got it leveled already and just kissing my rim drive. Can anyone tell me what type of tool I need to get the single ended box off? I could call VPI of course but they're not open on weekends and this is when I have the time...maybe.
sonofjim
Stringreen,
I did get the balanced box installed. The one they shipped me must be bigger than the one you have because it was too big to fit on the existing base. It was an easy matter to switch the whole thing out though. Once I got the top off, the screws to remove were right there. I wouldn't have gotten that far without your help though because I was stuck trying to figure out how to remove it from below. The box and anti cables only have a few hours on them but already sounded great this morning on Fragile, John Barleycorn Must Die and The Outlaws. Thanks again for your help. Without it I would have had to wait until Tuesday most likely after talking to VPI. You helped make my weekend a little more enjoyable.
Stringreen, think you are mistaken because the dimensions of the RCA box differ to the XLR, as a bigger internal size is required to mount the XLR's. I found it no to be the quick and easy change I thought, it be but quite worth the effort.
Scousepasty..I never mentioned dimensions of the box..only how to remove it. Yes it is easy once you understand how it comes off, and yes it is worth the effort to modify it to a balanced configuration