The solution for reducing the unbalancing was:
   - Manifold channels diameters were optimized
   - Nozzle series selected according to the part volume 
   - Suggested a specific setting for temperature and pin opening for each part.
The CAE analysis and the pressure loss calculation provided:
   - For checking and limiting the eventual issues on the part (weld lines, warpage, etc).
   - For the optimal flow balancing of all different size parts 
It was suggested the colour change procedure and approach to reduce the total number of scrap parts.