I just removed and reinstalled the shutoff valves under a bathroom sink and
the washers in the valve stems of the faucet itself. After doing so,
whenever I let the sink sit for a little while, like overnight, I get
rusty/yellowish water for the first few seconds after turning on the faucet.
The rust clears up after a couple of seconds, but I can't figure out why
doing what I did is causing the rust. Any ideas what I should check? The
only metal pieces that I actually replaced were the screws that held the
washers in place. Do I need to use a special screw for this, like a
stainless screw? The ones that I took out were pretty badly corroded.