Hi
I've installed a few sinks and faucet sets over the years but today I'm having an issue. The old faucet on a small bathroom pedestal sink was rusting underneath so we wanted to switch it out. I took it apart and noticed that there was sealant on the drain hole rather than plumbers putty. I scraped it all off and went to install the new drain. The drain hole on the sink is slightly raised at the back. This meant that the first drain insert and then second we bought wouldnt fit. I had the buy the same size as the old one, which was a 54mm metal. It seems to fit well except when installed, using plumbers putty, its slightly raised at the front. A bit of water catches there and seems to drain under the insert and down the side of the waste pipe under the sink. I tried reseting everything once but it still leaks a bit. Does anyone have a solution?. Should I add sealant around the drain?
Thanks