The 45 performance handbook by Panic states the top corner if the intake valve shuld be left with a sharp corner for better flow.
The HD KR performance manual states that this corner should be slightly radiused for the better flow.
My guess would have been to radius the corner to remove sharp edges and improve flow, but i believe Panic got a good reason for his recommendation. Later knowledge from flow bench tests?
Any experiece where to go with this?