A truss rod tweak is easy. The hardest part is getting the cover off and back on again. :D If it was here, I would first be looking at the neck angle. That's how the neck sits on the guitar, and how high the bridge saddles are adjusted up, or how low they are sitting. A common mistake made on T-60 setups is that people who are seeking low action do not first get the proper neck angle. Then they lower the strings so low to try to get that low action. Improperly done, those vibrating strings will rub on your pickup rings and covers. That is an obvious sign of a bad setup.
Okay, first things first. Take your T-60 and look down the neck, VIEW IT FROM THE HEADSTOCK END. Use the strings as your visual straight edge. Two questions to ask yourself… Is the neck pulling AWAY from the strings, or RISING up to meet them? If the neck is pulling away from the strings, you need to tighten the truss rod by turning the rod "righty tighty." If the neck is rising to meet the strings, it is humped and you need to loosen the truss rod, "lefty loosey." This loosening or tightening is done by looking down the neck, towards the body. You insert the 5/16" socket style truss rod wrench (stew mac has them) and as you are looking at the truss rod area, still sighting the neck from the headstock end, you will tighten the truss rod. Go in 1/4" turns, one at a time. You always retune the guitar using a tuner, and check your work. If the neck is rising to meet the strings, you need to loosen the truss rod. In the manual, there is a setup guide section that tells you the factory recommended relief. It says .012 and .015 is ideal at the 8th fret. Relief means the distance under the string at the 8th fret top. That will vary with your desired relief and your playing style. Some people even like it to be .08, so try factory and see from there.
Now, what about the neck angle? How do you know that's right or not?
First, look at the heel of your neck. Is the top of the fingerboard, at the center of the neck, about 1/8" or more above the height of the neck pickup ring or top of the pickup? If it's not, then you need to increase the neck angle. You want to tighten the allen screw in the neck plate... So, what I do is to loosen the strings and loosen the neck attachment screws about 2 whole turns. Then I take an 1/8" allen wrench and insert it into the hole in the plate cover. Now, this part is trial and error, so you may have to repeat it a few times until you are :-). To make the top of the fingerboard go away from the rings more, tighten the allen screw, and I do this about a 1/4 of a turn to start. Tighten the neck screws back down, do not over tighten them. Adjust the string heights per the manual, which says 6th string is 5/64" and strings 1-5 at 1/16". I actually find that my A string will need to be at 5/64" too.
Play the guitar for awhile. Is it more to your liking? If you want more angle, repeat steps above, going slower this time. Always readjust the string height after doing it. You will find that perfect angle. I usually see that the bridge saddle height screws are flush on the top of the saddles, or pretty close to it when it's perfect. Then, set your intonation and recheck the string heights. Recheck intonation with new and stretched strings. Hopefully, this has helped you. If you are confused, or need more help, you know how to get a hold of me. Good luck.
Excellent! Looks like I'm going to be busy checking mine.
The only excuse I have is time. I spent far too much time sitting behind the keyboard and nearly none at the workbench.