I know some general solutions for this problem , but I am not familiar with your cast.
1. You can heat to the bowl of resin.
2. You should reduce surface tension of resin.By adding a solvent or by adding a defoamer such as silicone liquids.The best result achieved by adding the thinnest (and consequently the cheapeest)silicone liquid .
3. You should pour the resin in bowl, slowly and you can tilt the bowl during addition the resin.