That explains the oddly angled 'valve seat' that showed up in the first pix. Rod & crank 100% should be be checked now, both for any bending. I personally would also have the block pressure checked to detect any hairline cracks... when a valve and/or valve head start flipping around, the forces and pressures can go in odd directions.
You can get Eddy heads ported to get to the flow you need. Or others.