I need to replace the diverter in a two handle Delta kitchen faucet because the sprayer is not shutting off all the time. The replacement recommended on the Delta website (Part No. RP 6073) does not seem correct since it is slotted and supposedly removable with a coin after taking off the spout. Mine has a hex top and is recessed and apparently needs some kind of remover. Has anyone replaced one of these and knows what the correct part number is?