Hey I don't think the valve seats are supposed to be square, all the ones I've seen were round ?! j/k OK I'm sorry about that
It's too bad about the seats, setbacks always hit at the wrong time. The first time I put my heads on my BBC in my '71 I got it all together and fired it up, BIG *** smile on my face, man that baby sounded good .... then I saw some green stuff coming out of the exhaust pipe. It turned out that when the machine shop cut the heads for the oversized exhaust seats they had cut into the water jacket in every single seat
. Back off they came, back down to Vancouver I went where I bought them. He actually wanted to pull the seats, seal the holes with epoxy and have me try them again. I said "I'm thinking NO ! "I had to wait another month for him to come up with a set of "049" heads and redo them to my specs. Big *** setback, but worth it in the end.