Hey guys, I think I need some help. I took the advice of the guys here and am learning how to do my own setup. I bought a Fender Jazz off eBay and had it setup via my luthier. However, I thought the action could be better. So, I used a .014 (.35mm) gauge on the eighth fret with a capo on the first fret and me holding down the last fret. I've got plenty of wiggle room left. I tried tightening the truss rod a couple times and waiting about 20 minutes between each adjustment. Well, it looks like I'm at the end of the line here because it doesn't look to be tightening anymore. Am I screwed? Thanks!