Okay, I used to ride bicycles and motorcycles, and I recall being told (about motorcycle spokes) "NEVER tighten them yourself b/c you can screw it up really bad", so I am kinda paranoid about how to tighten the spokes on my chair.
Anyway, my chair started squeaking some from the right wheel yesterday, I "strummed" the spokes, and one of them is REALLY loose, so I am guessing that that is what is making it so noisy.
How do I know how tight to tighten the spoke? Is there any trick to it? Do I need a special tool, or can I just do it with a pair of pliers?