mods that hopefully work for a TechAge-based pack

mods/mesecons/mesecons_movestones/doc/movestone_sticky/description.html

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+Movestones are effectors that push the blocks in front of them. They move along on the right side of a mesecon wire track. Sticky ones also pull blocks.
+A sticky movestone trying to move into, or push other nodes into, an unloaded block doesn't move.
+A sticky movestone trying to pull nodes from an unloaded block moves but leaves them behind.