I installed a Delta Dominic about 12 months ago. It has the touch technology and has been really great. Recently it has started leaking when I turn the faucet off. My best guess is that the solenoid is not closing all the way and allowing water to continue through. It is the same on hot and cold. I changed the batteries, but I have not taken it apart to look for obstructions yet, but that is probably next on my list. The internet tells me that the solenoid is going and to call Delta and get a new one. There is speculation as to whether they will give me one, or sell me one. Anyone have any other tips I might try?