You'll see how the mechanism works. Bottom line - if the three springs really have stretched and so won't hold the bridge down right, buy 3 floyd trem springs from ebay or a local store and fit them yourself. It's not a skilled job really, one end is pushed into the trem block and the other is hooked over the trem claw - you'll see what I mean.
No point in killing yourself though man.... that won't help.... ;)
This bit of the guitar is purely mechanical, so as long as you can make sense of what you can already see, swapping bits and adjusting screws is easy - just take your time and it'll be cool... the only time I ever had one of my bridges stick up in the air was when one of the springs had slipped off the claw so only 2 of the three were working - even that was fine once I put the spring back on.
Can you post a picture of your bridge / trem arm or anything that might help us? I have never seen an Edge III bridge... and I justr can't visualise the trem arm etc from what you are telling me... :o
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