I believe he's using checking springs that are too soft for flow bench testing. That would explain the pattern I've seen where all his posted flow tests have abnormally high low-lift intake #s.
If that's the case, yes that would back up that opinion.
The springs shown in the pic of the head on the flow bench are not stiff enough to hold the valve in the set position at low lifts. If they weren't stiff enough on my low-power bench, they're definitely not stiff enough for the bench pictured.
