Hello. I have a little problem. In my kitchen I have a pot sink set into the countertop and sealed with silicone. Unfortunately, my sink broke and I have to replace it. The manufacturer sent me a new sink as part of the warranty, but unfortunately the old one does not want to come out, because the silicone holds very tightly. Do any of you have an idea how to remove the old sink without damaging the countertop. The table top is made of MDF. I will be grateful if someone will tell me how to solve my problem.