I posted in GD about a leak in a drain coming from my master bath but have not received any responses.  I need a plumber to look at a 4" drain that is inside an exterior wall coming from my 2nd floor bath that goes down into the garage ceiling.  

I have taken out the garage ceiling dry wall and it is a single PVC drain pipe that handles the two sinks and toilet in the master bath.  I don't know if I have some kind of clog or a cracked pipe.  Maybe it is damage from the freeze we had, don't know.  The toilet and the two sinks drain freely.  

Any plumber recommendations in my area would be appreciated.

I've had good experiences with Lex's Plumbing.

https://www.levyandson.com/