Hello all. I have a Hagstrom HB-8 bass (8 string octave courses) on which I have stripped off the truss rod nut for the second time. The first time I tried to tighten it, the truss rod barely moved before becoming stripped. I then replaced it with a new truss rod nut and asked a tech to set it up. Everything was good until yesterday. I decided that I didn't like the setup the tech did after all. I said to myself: well, I'm fixing this myself, now I know the loose the strings and pull the neck while tightening the truss rod trick, so it should be easy. On the first try, the truss rod moved easily. I felt lucky and said to myself: it was easy, I'm sure I can still tight it a bit more. I was wrong. I tried the same trick and after three tries, the truss rod didn't move at all and the truss rod nut started to strip off The bass plays good, but not great, so I think that it cat take a neck a bit more straight, only if I find a way to tight the truss rod without stripping it again. I think this is being hard because of the tension that the 8 strings put on the bass. I have setup my other basses myself, including a Hagstrom HB-4 that is basically the same as this but only has 4 strings and this is the first time (well, the second) that I have this problem. The next time I try this I'm thinking about removing some strings to release the tension, or maybe I will take it to a pro and ask him to put the neck as straight as I like it, but still I want to know how can I do this myself.