I am not a plumber but I am hoping to get some help. Being a widow there is much I now have to do alone at least attempt to. My kitchen faucet is a Master Plumber pull out. I need to replace a part and dont know if I can purchase the part I need. The item I need to replace is the pull out faucet itself. I can disconnect this from the coil it is connected to and have cleaned it as much as I can but it is time to purchase new. I would hate to buy a whole new unit if I can replace this part so I a relying on your expertise to help me with this. Thank you all for your help…Trish