Love the mod! Just downloaded the new 1.7.1 version, and it doesn't seem to break mod-added stone types - I've got Create installed, which seems to add a lot of Limestone and Scoria, but the Excavator just stops in front of these. If you manually break them, it continues on until it encounters more, and then stops once more.

Should be fixed in the Release 1.7.2
c205b85

Hi!

Thank you for the issue. I will fix it for the next release.