okay,i'm replacing a bridge but it's an Ovation without the usual sound hole.So i can't use clamps to hold it down and i don't have a caul.Would some weight alone be good enough or does anybody have an idea?Also,should i sand it down to the bare wood before gluing?I've watched a few youtube videos but none were showing a guitar without the sound hole by the bridge.Mine is an Ovation CS 257 Celebrity Deluxe if you can pull up a pic and take a look.Any ideas appreciated!Mike