It sounds like you may need to adjust the truss rod too, I recently done a setup on a cheap electric, and had to turn the truss rod to lower the action on it. You can try a shim, but you might want to try the truss rod first. I can give you more info if you want to go that way, just let me know.
JD
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Latest Tutorials
Bending The Flat 7 To The 1
Chicken Pickin'
Hybrid Picking Exercises: One Finger
Hybrid Picking Progression In A
Double Stop Progression In A
Crosspicking Combinations
Behind The Nut Bends On The G String
Behind The Nut Bends On The B String
My Lessons
http://www.youtube.com/jdfenderbender
myspace.com/jdjarrell
myspace.com/guitartrickscountry
twitter.com/jdfenderbender
facebook.com/jdjarrell