Checking is pretty straight forward, just gets a bit more involved if any are out, then you have to pull the cams. Haven't done my Tiger yet but my wife's Street Triple was pretty cramped on a couple of exhaust valves, not a lot of room. Hopefully the Tiger isn't quite as tightly packaged as the Street Triple was. Take your time and double, triple check things. Before I do mine I want to find a good set of angled gauges, I think they would make those cramped one easier to get to.