diff --git a/src/hooks/roofcover/useMovementSetting.js b/src/hooks/roofcover/useMovementSetting.js
index 08b31f4d..5e801912 100644
--- a/src/hooks/roofcover/useMovementSetting.js
+++ b/src/hooks/roofcover/useMovementSetting.js
@@ -198,8 +198,16 @@ export function useMovementSetting(id) {
     if (type === TYPE.FLOW_LINE) {
       FLOW_LINE_REF.POINTER_INPUT_REF.current.value = ''
       FLOW_LINE_REF.FILLED_INPUT_REF.current.value = ''
-      FLOW_LINE_REF.DOWN_LEFT_RADIO_REF.current.checked = true
-      FLOW_LINE_REF.UP_RIGHT_RADIO_REF.current.checked = false
+
+      if (FLOW_LINE_REF.UP_RIGHT_RADIO_REF.current.checked || FLOW_LINE_REF.DOWN_LEFT_RADIO_REF.current.checked) {
+        // If one is checked, uncheck the other
+        FLOW_LINE_REF.UP_RIGHT_RADIO_REF.current.checked = !FLOW_LINE_REF.DOWN_LEFT_RADIO_REF.current.checked;
+        FLOW_LINE_REF.DOWN_LEFT_RADIO_REF.current.checked = !FLOW_LINE_REF.UP_RIGHT_RADIO_REF.current.checked;
+      }else{
+        FLOW_LINE_REF.DOWN_LEFT_RADIO_REF.current.checked = true
+        FLOW_LINE_REF.UP_RIGHT_RADIO_REF.current.checked = false
+      }
+
     }
     if (type === TYPE.UP_DOWN) {
       UP_DOWN_REF.POINTER_INPUT_REF.current.value = ''
@@ -348,7 +356,7 @@ export function useMovementSetting(id) {
         isGableRoof = false
       }
       const lineVector =
-        target.y1 === target.y2
+        Math.abs(target.y1 - target.y2) < 0.2
           ? FLOW_LINE_REF.UP_RIGHT_RADIO_REF.current.checked
             ? 'up'
             : 'down'