Charly2020

Hello all, I need help with my baits done in a aluminum custom mold. The mold has 6 cavities and all the baits when they are injected have air bubbles in the rib. I've tried everything but I can't get rid of these bubbles. I use a vacuum pump, suck up the plastic and then turn the injector upright to eject a small amount,etc etc. Can someone help me? Thanks