I recently found a guitar in a dumpster, a steel-string acoustic. It's not the best guitar--an Galveston WJ-750, probably discarded by someone who gave up on guitar lessons--but it has a decent sound, and I think I can find a home for it.
However, the bridge hasn't been glued on all that well; I can slip a piece of paper into the corners, showing that the bridge wasn't glued on all that securely. (The problem is symmetrical, i.e., the same gap exists on both sides of the bridge, the corners on the side furthest from the soundhole.)
As a temporary measure, I've put on a set of "silk and steel" strings, which are of lower tension than standard steel strings.
In the longer term, is there any way for me to reinforce the bridge that doesn't require removing and reattaching it? I don't want to go through a lot of effort for what is likely a $70 guitar, but it would be nice if I could make it last more than a few years before the bridge started peeling off by string tension.
Edit: As a side question, how can I tell what glue was used to glue the bridge on? It it's a good glue like, say, hide glue (unlikely), I'd be more inclined to leave the bridge as it is. Or am I better off in the long run removing the bridge and reattaching it, despite my desire to do this on the cheap?