Yes, exactly. So, the fact that mine has those 3 machined circle divets on the back side. Even though it doesn’t have the moon shaped machined groove on the front. Confirms it’s externally balanced for a 360 ? Because a 318 is not externally balanced. A 318 balancer should have no moon or circle machined grooves for balancing on either side, correct ? A 318 should be completely flat on both sides ? That’s my thinking anyhow.