I am new to this forum and I have a problem. I have a PRS Custom 22 that I have tuned in Drop C with the action set good, with Ernie Ball Beefy Slinky 11's, but when I hit that low C it bottoms out, not the amp, but the strings, like it fret buzzes and the C actually sounds like it doesn't hold the C, like it drops to a B for a second because of it fret buzzing, but doesnt go out of tuning, just bottoms out. I have a hard strum, and won't compromise that, so can someone help me? Bigger strings? Change something? What? That is a 54 on that C why is it still doing this?