What Dave sayid. I think they had the adjustable bridge for a while.
I have the Dead on with the normal bridge. It took me an hour, had to take strings and bridge of twice, but I managed to intonate it quite good. I first did some measurements, calculating aproximately how for the bridge had to move. Got strings and bridge off, tried it and it was almost good. Second time was for the last little tweak. Not easy, but it works.