I hear you. Nice ports and can't fit a decent valve spring
My old heads, I cut the seat pockets, but they were stock ports. The CNC ported heads are ported about as tall as you can go before breaking into the valve spring seats. Anyone using a shim and no spring seat cup/locator? My old B-1 B/S heads were setup with just a shim between the spring and head so I'm not sure how important the spring cup/locator is?