Fixed Warped Slant (high compression) Head

[Fletch]

you can also put some clay on top of the piston to see how much you can take off the head.
take the head off, and put a peice of clay on top of the pistion. put the head and gasket back on and torque the nuts. Install the spark plug and rotate the engine one time. when the piston gets to t.d.c. the spark plug will make an impression in the clay and this will tell you how close the spark plug is to the piston. remove the head and look at the clay. do some measuring, and you will get an idea of how much you can take off the head before the spark plug will hit the piston.

That's an awesome tip, thanks! I've got a really long plug, so that will come in handy if I take some off the head. Do you think that the non-level head could be causing extra sound because it is vibrating more?