I'm looking to remove my kitchen tap handle as it needs lubricating, it sticks when turning it on and jumps from nothing to full stream. Unsure how to remove it, I think you unscrew the pin bit first, but it's pretty tight. Tried looking for a you tube video on how to, but can find all other types of taps but not the same as mine. Presume I need to buy special tap lubricant to use one is off.