The other say I changed the strings on my SECU24 to a lighter gauge, and since then have noticed, everything I play above the 12th fret sounds muffled. I thought maybe I was inadvertently palm muting, but that's not the case. I've been trying to practice different styles outside of my comfort zone, and it's hard to do things like hammer on and pull off when the string doesn't sustain at all. If I work the 11th fret and below, I can do what I need to do.
So what would cause something like this to happen? I'd really hate to think it's because I went with lighter gauge strings, I've owned a lot of guitars, and swapped a lot of strings, and never have I had anything like this happen... are PRS and SE guitars picky or might there actually be something wrong?