Instead of adding the third plate, we think that the attached study should be done. Varroc will evaluate this issue first, please do it yourself. We will need to increase the slider size and add additional sliders at other points if necessary. In addition, small ribs (for example: 1 mm x 1.5 mm) should be added where the cores are. In this way, it is aimed to keep the part on the moving side of the mold. It should not be forgotten that the dimensions of the added ribs do not cause problems in assembly. Please try this. How long does it take for this work? Please I request you to plan urgently.