I just repaired my hot water tempering valve on my boiler. Its a tankless system so this tempering valve was how i set how hot the water is for the house. After replacing the internals of this valve i now have a bit of control over how how the hot water for the house is, which is great. Now however i have a new issue. My shower has lousy water pressure on hot or cold, O and hot is now more like lukewarm at best. The faucet is a very old moen i think from the 70's but i cant an image of it on the moen site.

Ok this is weird. For over a year I've been hearing only in the bathroom a sound that can best be described as a very soft muffled timpani drum, always two beats, always right in a row with maybe a quarter second between them (sorta that echoey sound the drum makes). I've heard it in one bathroom that is a full bath and one toilet closet (not sure if that is what it is called) it's in the master bath. At first I thought it was coming from the vent fan ducts, but the other day I had the toilet pulled in the full bath and before I had stuffed a rag in the drain, that sound this time [U]not muffled at all[/U] obviously came from the drain flange. I was kneeling near it. Any ideas? Lived in the house for quite some time, have only heard the sound the last year or so. House built in 1998 and has plastic plumbing. It's relatively common, like 25% of the time I use the bathroom. I'm not the type to hang around the bathroom so not sure the time interval between sounds. It's prior to using any plumbing (flushes, sink, etc). I sometimes hear it when I'm walking by the bathroom and no one else is home. I'll be going up to the roof soon to check on another issue and will take a look down the vent stack.