Hello Metalmad!
If you want to keep things like the full size engine the adapter and the drive snout are the only holes counterbored. All the other bolt heads should be atop the surface. Even the rear cover is surface and not sunken.
This is the best picture i have.
If you want to keep things like the full size engine the adapter and the drive snout are the only holes counterbored. All the other bolt heads should be atop the surface. Even the rear cover is surface and not sunken.
This is the best picture i have.