diff --git a/AERO3220_HW4_block_diagram.md b/AERO3220_HW4_block_diagram.md
index a12f7c2..f93b88b 100644
--- a/AERO3220_HW4_block_diagram.md
+++ b/AERO3220_HW4_block_diagram.md
@@ -82,9 +82,9 @@ This version shows the same coupled dynamics using gain blocks and integrator tr
 
 ```mermaid
 flowchart LR
-    Z1[State z₁] --> G11[Gain -k₁/m₁]
+    Z1[State z₁] --> G11[Gain k₁/m₁]
     G11 -->|" - "| S1[Σ]
-    Z2[State z₂] --> G12[Gain +k₁/m₁]
+    Z2[State z₂] --> G12[Gain k₁/m₁]
     G12 -->|" + "| S1
     S1 --> I11[Transfer block 1/s]
     I11 --> Z1D[State ż₁]
@@ -95,9 +95,9 @@ flowchart LR
     G2U -->|" + "| S2[Σ]
     Z1 --> G21[Gain k₁/m₂]
     G21 -->|" + "| S2
-    Z2 --> G22["Gain -(k₁ + k₂)/m₂"]
+    Z2 --> G22[Gain (k₁ + k₂)/m₂]
     G22 -->|" - "| S2
-    Z2D[State ż₂] --> G23[Gain -b/m₂]
+    Z2D[State ż₂] --> G23[Gain b/m₂]
     G23 -->|" - "| S2
     S2 --> I21[Transfer block 1/s]
     I21 --> Z2D