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However, we then struggled to remove this feature. We tried decreasing the injection pressure profile and the injection speed. That decreased the amount of burning but did not entirely eliminated it. We then continued decreasing the injection speed a bit more drastically in order to fix the defect. In doing this, the snap ring showed no defects associated to decreased injection pressure, and that is why we decided to continue tinkering with this parameter. What did finally work was scratching both the cavity and core in the area where the burn was occurring.