The shower water temp here has been getting progressivly cooler so I thought I'd try changing out the mixer valve inerds. It got a lot cooler after I turned the mixer back and forth a few times during the last plumbing project! So, I've plunked down my $18. Has anyone done this? Is it just a matter of shutting off the water, unscrewing the "hand tighten" piece, swapping out the assembly, and hand tightening it back in?
