I have a bit of separation in my MBP screen when closed -- the right front corner sits flush, but the left front corner sits about 3 mm higher. Between the corners, there is some separation varying from 0-2 mm. I've always taken this as normal and within tolerance.
Is your MBP is substantially different (your first post makes it seem that way) ?
Also, the shocking is abnormal. Are you using the grounded plug? Is your work area prone to static electricity?