I'd have to make a phone call but IIRC I had a 45 degree seat that had an 82 degree bottom cut for bowls like that. I know I had one with a 75 but that bowl may want even more than a 75.
Again going back to the class I went to we were told to never exceed 15 degrees between our seat angles as air has a hard time navigating it. A bigger valve would lower that straight area but for right now I’m trying to help guys out with 2.02 valve info as that’s what 90% of them will be running. If I wanted to hit the easy button I could drop them off at the machine shop, hand over 64.00, and grab a different set of valves off the shelf. If it hits the 282-285 cfm I’m at now and I’m satisfied with the mid lift numbers it’s a win win.
