On 20 Oct 2005 13:44:31 -0700, "';'%?PF ;/l."
wrote:

The pipes are copper and yes there used to be more flow. I am pretty
sure it is the new fixture.

You can always replace the fixture with a couple full-port ball valves
and a copper 'T'. Or put in another faucet at the head of the tub,
so you can add hot water without having to stir.