Guitar truss rod dilemma

Any inbus the right size will do the job. Every respectable guitarshop should be able to tell you what that is for free. Don't even think of using anything even a little smaller: it will ruin the truss rod's head.

If the truss rod has broken loose, it is not user serviceable. This needs to go to a repir shop. The fretboard has to come off to fix this. The repair may be more than the value of the guitar.

Take it in for setup. Likely the truss rod or the bridge is out of adjustment. Wrong strings can also cause the problem. There are YouTube videos on guitar setup... I would NOT attempt truss rod adjustment yourself.

With that guitar I would recommend taking it to a guitar shop for setting it up. You do NOT want to mess with the truss rod yourself unless you have had experience doing that.

To fix the action on your B.C.Rich Warlock, you need an Allen Wrench, or Hex key. There is a truss rod cover on your B.C.Rich's headstock. Just open it using a screwdriver and you will find the truss rod. Then adjust the action using the hex key.
check out more here -
http://www.squidoo.com/b-c-rich-warlock-set-up-and-fixing

Have you changed strings on it? Old strings get worn spots in them from rubbing on the frets that will cause these type of symptoms. If you put new strings on and get the same issue, check your neck relief (the amount of bow in the neck) to do this, hold your low E string at the first fret, and at the 12th or 14th fret. The neck should have a slight bow in the middle that puts it between 1/16" and 1/8" or so away from your string. If it does not have enough bow in it, you can adjust the truss rod. Most guitars use an allen wrench for this, it will be inside the soundhole on an acoustic usually, and on an electric it is normally on the headstock under a cover. There are many how-to's online about adjusting a truss rod, the key is to do it very slowly, only do about a 1/2 turn a day, retune, check it again the next day. Loosen the truss rod to put more neck relief, tighten to straighten the neck. If this still doesn't fix you up, let me know, and I'll tell you where to go from there.

I own an Epiphone Casino and if I needed to adjust the truss rod I would take it to a luthier (stinged instrument repair person). There is a good write up on it here. http://www.fretnotguitarrepair.com/trussrods.htm

Hope this helps.

Bob

The truss rod must be too slack then.
Is the sound ok? Does it play ok?
In it's current state the truss rod is doing nothing.
If the guitar is sounding ok and playing ok, then the next time you change the strings pull the truss rod out and throw it in the garbage.lol
Seriously though...just pull it out and put it aside.
If,however,the guitar is not sounding ok then try tightening it.
If you're unsure about how much to tighten it then I suggest taking it to your local music store for help with that.

I can understand it a bit of a daunting task setting up these guitars (I have bought at least 5 like this) But yes it might be the truss rod ... Without looking at the guitar myself its hard to say ... If you tighten the truss rod remember how much you turned the allen wrench because if it doesnt work your going to need to reset it and start again ... Remember to turn it the right way! and if all else fails ... If your near me (Bournemouth, South of the UK) then you can always pop on over to mine and I can take a look at it.

Failing that just take it to your nearest guitar repair shop and a setup should cost you about £30 if your in the UK.