#1
I've been watching alot of Paul Gilbert live and some of his lessons and his palm mutes are crystal clear, when i try it they are all scratchy and unclear. how can i make pal muting sound more clear
My Songs:
God of Thunder - Kiss
Detroit Rock City - Kiss
The Metal - Tenacious D
Tush - ZZ Top
Open invitation - Santana
Hog Bitch Stomp - Buckethead
#2
Try moving your hand a bit closer to the neck, but not so much that the notes are noticeably off pitch.

Cutting back on the distortion helps too. I think for most of his lessons he uses a clean tone, and he rolls back the volume on the guitar for his super fast palm-muted runs.