GBoy, IF you're Series bridge from the 70s is using the same hardware as my 90s Spoiler, remember it this way: Turn it clockwise to screw the bridge into the body (downwards). Unscrew it (anti-clockwise in the Queen's English) to raise it.
I really felt this was too small an increase in relatively small guages to awaken the action elves, glad I was right.
I just love the Internet . . . I'm sitting in Tennessee talking basses with a friend in SCOTLAND! What a rush . . .
J o e y