Hello, I really need help on how to fix this issue, we purchased this from better bathrooms over a year ago. But recently two small screws from underneath the tap have come loose in the pic shown. This means when the tap is switched on water comes through the holes, as well as the tap. The screws are tiny, but I don't want to have to replace the hole unit for the shake of this. Could something be used to plug the holes, any suggestions would help or if I can replace the screws.