I am attempting to fix a leak in a DECK-MOUNTED SINK MIXER KITCHEN TAP. During the process, I noticed the soft pad between the sink surface and the tap was in a bad way so I cut off the bad bits. I reinstalled taps, tightened all and siliconed around the tap top surface. There is water making its way down through the hot water hole (silicone not effective). Does anyone know where I can get a replacement foam pad?