First, evaluate the area that is sticking. Perform a tape test in various spots on the mold to determine if the problem is related to application. Is it a consistent problem in one area or in one mold? Perhaps the sticking is related to abrasion, sheer edges, or draft angles. Is the area that is sticking a difficult area to reach when applying mold release? It may also be an area that simply requires more frequent touch ups of release, such as sheer edges or other areas of abrasion.