I really like when you have a cool tool that will do the job for you. You see more broken ears on tappet blocks (from careless mechanics with screw drivers). McFarland made this neat tool a few years back that threads on the block - and then a bolt presses on the adjuster (with a cam installed under the roller lifter) and pulls the block out. You can use the tool to install the block too. Just thread on the tappet block all the way down, remove bolt from tool, and tap in with a rubber mallet. You might get it close to the case and then thread in some screws and check it - make sure it's straight.