Great model! I ran into the same sizing issue other did, so for anyone that has 150% v1.0 Dummy 13's you can use these changes to get the head joint to fit inside: 1. Resize the two helmets to 150% 2. Resize the "neck peace.stl" object in each helmet to 66.53%. This will allow the head joint to fit inside. 3. Reposition "neck peace.stl" 3a. For Thomas' helmet, use the following object coordinates: -0.05, -1.23,-3.02 3b. For Guy-Manuel's helmet, use the following object coordinates: -0.03, -0.99, -4.31 I also used normal supports instead of tree supports to ensure the chin on Thomas' helmet wouldn't dislodge during printing.