My Delta shower is leaking steadily, a constant maddening drip. How can I fix this ?

Hi Golf... does your shower valve look anything like one of these pics. A drippy delta faucet is usually the result of worn/compressed seats (washers here) and springs...

If so, then need to shut water supply to shower (may need to shut water main at water meter) and then disassemble shower valve so that you get to the "seats & springs" (#2 in left pic. #4 in right pic.)... shown in BOTH types of shower valves.

These springs and seats are available at all home supply stores... see pic. Of seats and springs so I am clear.

Get back to me with questions or more information if I missed it..ok? Talk soon... Mark