diff --git a/EGrid/src/eg320/Terr320E0.scala b/EGrid/src/eg320/Terr320E0.scala
index 41978df64..2a1111f43 100644
--- a/EGrid/src/eg320/Terr320E0.scala
+++ b/EGrid/src/eg320/Terr320E0.scala
@@ -43,7 +43,7 @@ object Terr320E0 extends Long320Terrs
   help.run
 
   corners.setCorner(130, 526, 0, HVLt)
-  corners.setCornerPair(132, 524, 2, HVUR, HVLt)
+  corners.setCornerPair(132, 524, 2, HVRt, HVLt)
 }
 
 object BritReg
diff --git a/EGrid/src/egrid/EGridLongMan.scala b/EGrid/src/egrid/EGridLongMan.scala
index c421d1fb8..f9fcd2a79 100644
--- a/EGrid/src/egrid/EGridLongMan.scala
+++ b/EGrid/src/egrid/EGridLongMan.scala
@@ -376,7 +376,11 @@ final case class EGridLongMan(thisInd: Int, sys: EGridLongMulti) extends EGridMa
       case HVUL if vUp => Some(HCen(r + 1, ltGrid.rowRightCenC(r + 1)))
       case HVUL => Some(HVertHigh(r, ltGrid.rowRightCenC(r - 1)))
 
-      //case HVRt Some( r, rtGrid.rowLeftCenC())
+      case HVRt if HVert.rcISHigh(r, c) => Some(HVertHigh(r, rtGrid.rowVertHighLeftC(r) + 4))
+      case HVRt => Some(HVertLow(r, rtGrid.rowVertLowLeftC(r) + 4))
+      case HVLt if HVert.rcISHigh(r, c) => Some(HVertHigh(r, rtGrid.rowVertHighRightC(r) - 4))
+      case HVLt => Some(HVertLow(r, rtGrid.rowVertLowRightC(r) - 4))
+
       case dirn => excep(s"$dirn")
     }
   }
diff --git a/Tiling/srcHex/HGrid.scala b/Tiling/srcHex/HGrid.scala
index 0f543421b..afcd96d4d 100644
--- a/Tiling/srcHex/HGrid.scala
+++ b/Tiling/srcHex/HGrid.scala
@@ -128,6 +128,39 @@ trait HGrid extends Any with TGrid with HGridSys
     case _ => true
   }
 
+  def rowVertHighLeftC(r: Int): Int = {
+    val rUp = r + 1
+    val rUpHC = rowLeftCenC(rUp)
+    val rDn = r - 1
+    val rDnHC = rowLeftCenC(rDn)
+    ife(rUp %% 4 == 0, (rUpHC - 2).min(rDnHC), rUpHC.min(rDnHC - 2))
+  }
+
+  def rowVertLowLeftC (r: Int): Int =
+  { val rUp = r + 1
+    val rUpHC = rowLeftCenC(rUp)
+    val rDn = r - 1
+    val rDnHC = rowLeftCenC(rDn)
+    ife(rUp %% 4 == 0, rUpHC.min(rDnHC - 2), (rUpHC - 2).min(rDnHC))
+  }
+
+  def rowVertHighRightC(r: Int): Int = {
+    val rUp = r + 1
+    val rUpHC = rowRightCenC(rUp)
+    val rDn = r - 1
+    val rDnHC = rowRightCenC(rDn)
+    ife(rUp %% 4 == 0, (rUpHC + 2).max(rDnHC), rUpHC.min(rDnHC + 2))
+  }
+
+  def rowVertLowRightC(r: Int): Int =
+  { val rUp = r + 1
+    val rUpHC = rowRightCenC(rUp)
+    val rDn = r - 1
+    val rDnHC = rowRightCenC(rDn)
+    ife(rUp %% 4 == 0, rUpHC.min(rDnHC + 2), (rUpHC + 2).min(rDnHC))
+  }
+
+
   override def hCenSteps(hCen: HCen): HStepArr = HStep.full.filter(st => hCenExists(hCen.r + st.tr, hCen.c + st.tc))
 
   override def unsafeStepEnd(startCen: HCen, step: HStep): HCen =