Re: Taking my JS1000 for a set-up
Well, I assume you mean the springs in the back of the guitar have pulled the bridge down into the body...so there shouldn't be any damage although the springs might need to stretch back into play a little. They tend to develop a memory of what tension they have after a while.
Other than that, unless there's something else wrong with your guitar, it shouldn't be a problem and a basic set up should do the trick. You might have some neck or fret issues depending on the care you've given, but without seeing the guitar, we've no way to know.
My advise would be to get the set-up done and see if it's possible for you to be present during the process so that you can learn how things work, what adjustments to make, and how to do your own set-ups. This'll save you cash down the road.