Looks like you have 2 groove intakes and three groove exhausts.
The multi groove locks actually butt together and allow the valve to rotate and it reciprocates. This, is supposed to make the valve spin and keep carbon from building up on the seat. I almost never use multi groove valves/locks unless it's a bone stock deal with hydraulic lifters. If it has a solid lifter, or even a fairly fast hydraulic lobe, it will beat the snot out of the locks pretty quickly.
The single groove locks do not butt together and grab the valve very tight. The valves don't rotate. When they do, from float, bounce, surge or what ever they usually fail. You can see valve float fairly easily on the tip of the valve.