I have a C-10 w/ a baggs dual source, and jsut recently The pickup jack has come loose from the inside. The tightening on the out doesn't help and twisting it more might damage the pickup. I took off all the strings to try in tighten it from inside, but I Can't reach down in there far enough to get it. What should I do, and how does collings even get down there to tighten it? The pick up still works, but I can't put a strap on it, which is a big problem because I gig weekly. Any help would be great.