Me wrote:

Hi all,
I've just installed a new tub drain. Surprisingly nothing leaks, but
the tub drains so sloooooowly now you might as well have the stopper in
place. What did I do wrong?!?!
Thanks,
Steve


What kinda stopper? Ordinary trip lever? If so, pull the stopper
out and see how it drains. May just need adj.

Jim