Quote Originally Posted by Kyle Boatright View Post
Interesting. I have a set from Spruce that works just fine on my wide deck O-320 without modification. I wonder if the problem is unique to Continentals or narrow deck Lycomings?
You made my point. If you were working on multiple engines, your wrenches would need to fit several different engines, and would have numerous grindings and notches as well as other minor modifications to make them fit more than one application.