I just replaced the springs and washers in our Delta Monitor 1700 series shower so I am a little disappointed with them at the moment. I know moving parts don't last forever, but I didn't expect to have leaks in a 6 year old house. The kitchen faucet is less surprising because it is used so much, but the shower only gets used twice a day. If I ever figure out how to get the handle off the kitchen faucet I might try for some parts. Thanks for the help.