Hello, I'm attempting to replace the faucet in our bathroom, and I've removing the nut around the supply line, however it seems that the supply line (a really really hard non-flexible type of rubber) is embedded into the supply line valve. It also seems that it does the same thing to the bottom of the faucet handles, never seen this before. Anyone have a recommendation on how to remove the lines? I have everything unscrewed, it's just the lines that need to be taken out so I can put new lines and the new faucet in. I've attached some pics so you can see. Thanks!