Two things:
Want me to lend/send you the cutaway head pieces?
My seriously delusional though was to build up weld between the spring seats to allow the port roof to be raised.
Thanks again for testing and posting.
When you get to the point where you are pulling the top end, my guess is that paying attention to the squish band as well as the actual compression ratio will yield some serious results. Lance used a high comp piston, and cut the cylinder and the underside of the head. That tells me the compression ratio must be pretty dismal, and the squish band could be measured with a tape measure