About half year ago, we found that the tub faucet is leaking. We changed the the rubber ring inside, although they were not worn or broken. The replacement of the rubber ring did not help. Then, we found out the problem was from the little wood chips in the faucet. We flushed them out, and no more dripping.

Now, again, it ALL AT SUDDEN drips again, but we did not find any debris in the faucet. Everything still looks fine and new. What could be the problem?

Also, every time we disassembled the faucet, we had to go to the curve to shut the main valve off, because we could not find any valve in the tub that controlled the faucet. Did we miss any places where could hide the valve for the tub facet. It's a pain to turn the main valve on and off...

Thanks