diff --git a/litris.py b/litris.py
index 0dfb68c..7d21de8 100644
--- a/litris.py
+++ b/litris.py
@@ -359,6 +359,7 @@ class Litris(GameBase):
             self.keyboard.press('e')
             self.keyboard.release('e')
             print("rotation 1 pressed: e")
+            cv.waitKey(40)
         elif rotation == 2:
             self.keyboard.press('e')
             self.keyboard.release('e')
@@ -367,6 +368,7 @@ class Litris(GameBase):
             self.keyboard.press('e')
             self.keyboard.release('e')
             print("rotation 2 pressed: e 2")
+            cv.waitKey(40)
         elif rotation == 3:
             self.keyboard.press('q')
             self.keyboard.release('q')
diff --git a/tetromino.py b/tetromino.py
index 924c780..d18e60c 100644
--- a/tetromino.py
+++ b/tetromino.py
@@ -177,10 +177,10 @@ class Tetromino():
             'd': {0: 9, 1: 9, 2: 9, 3: 9},
             't': {0: 9, 1: 9, 2: 9, 3: 9},
             's': {0: 9, 1: 8, 2: 9, 3: 8},
-            'z': {0: 10, 1: 8, 2: 10, 3: 8},
-            'j': {0: 10, 1: 9, 2: 10, 3: 9},
+            'z': {0: 9, 1: 8, 2: 10, 3: 8},
+            'j': {0: 8, 1: 9, 2: 8, 3: 9},
             'l': {0: 8, 1: 9, 2: 8, 3: 9}
-         }
+        }
         return offset_map.get(self.letter)[rotation]