Pretty impressive. Was it an optical illusion of did the valves appear to "Bounce" occasionally at low revs (before they gave it some gas)?
Interesting. Love seeing the oil being squirted out. So tell me: is that oil vapor later on, or smoke from burnt oil?
The the caps and springs were both rotating clockwise - guess the valve must as well - didn't know they did that - not that it matters
It always amazes me that valve springs can react fast enough! I know the forces involved in compression help seal the valves but it's still great to see a top end at work like that, nice find!