Hi everyone. I have a Yngwie Malmsteen guitar and I need to check with a feeler gauge my thruss rod setting. In the manual it says install a capo at the first fret and depress the 6th string where the neck joins the body and check at the 8th fret for .010 string height at the bottom of the string to the top of the fret but the problem is how do you check this on a scalloped neck? There are no flat point for me to reference this. Also where can I get a .010 feeler gauge because I only need one? Would my local music stores carry this? Thanks everyone! Joe