fix ratings for 1998, fixes #402

Author: noahm

src/songs/a20plus.json

@@ -174,7 +174,7 @@
       "bpm": "150",
       "folder": "DanceDanceRevolution EXTREME",
       "charts": [
-        { "step": 119, "lvl": 4, "style": "single", "diffClass": "beginner" },
+        { "step": 119, "lvl": 3, "style": "single", "diffClass": "beginner" },
         {
           "step": 177,
           "freeze": 1,
@@ -192,14 +192,14 @@
         {
           "step": 311,
           "freeze": 6,
-          "lvl": 10,
+          "lvl": 9,
           "style": "single",
           "diffClass": "expert"
         },
         {
           "step": 180,
           "freeze": 1,
-          "lvl": 4,
+          "lvl": 5,
           "style": "double",
           "diffClass": "basic"
         },
@@ -213,7 +213,7 @@
         {
           "step": 313,
           "freeze": 6,
-          "lvl": 10,
+          "lvl": 9,
           "style": "double",
           "diffClass": "expert"
         }

src/songs/ddr_world.json

@@ -247,7 +247,7 @@
       "charts": [
         {
           "step": 119,
-          "lvl": 4,
+          "lvl": 3,
           "style": "single",
           "diffClass": "beginner",
           "sanbaiTier": 4.25

src/songs/ddr_x3.json

@@ -86,13 +86,13 @@
       "artist_translation": "",
       "bpm": "150",
       "charts": [
-        { "lvl": 4, "style": "single", "diffClass": "beginner" },
+        { "lvl": 3, "style": "single", "diffClass": "beginner" },
         { "lvl": 4, "style": "single", "diffClass": "basic" },
         { "lvl": 6, "style": "single", "diffClass": "difficult" },
-        { "lvl": 10, "style": "single", "diffClass": "expert" },
-        { "lvl": 4, "style": "double", "diffClass": "basic" },
+        { "lvl": 9, "style": "single", "diffClass": "expert" },
+        { "lvl": 5, "style": "double", "diffClass": "basic" },
         { "lvl": 6, "style": "double", "diffClass": "difficult" },
-        { "lvl": 10, "style": "double", "diffClass": "expert" }
+        { "lvl": 9, "style": "double", "diffClass": "expert" }
       ],
       "jacket": "ddr_x/1998.jpg"
     },