Its not direct enough until you rose joint the links, that makes it a proper job if you have set up the castor / camber properly, but thats another thread. RR
Have Canley set up & certainly helped with a new tight engine. Also have a Denso i bought off the internet which looks identical but turns the other way! Thats free to anyone who wants it if i can find it. RR
Leak down test if you have a compressor would be another thing. Also check the torque of the head bolts, may give you an idea if they are loose. To be honest its only going to take a couple of hours to get the head off & you probably need to do that anyway so just get on with it.