Hey Fishy, how about the intake ports? I need some more advice before I call it finished and start assembling the heads. Here are some pictures, should I make the curved walls as straight as I can? My friend told me that I could take as much needed to make the curved walls straight as long as I don't go through it. My concern here is, where are these heads prone to cracks? Don't want to weaken them. He said the port runner walls don't get that hot and shouldn't worry about cracks there.