So my service advisor called me back and said they test drove it and definitely heard the squishy sound. They couldn't find anything after putting him up on the lift. she said they greased everything then took it for a drive and the noise is gone. They believe it was the bushings, I'm so happy, but I did spend all day waiting to see if the noise came back, paranoid I guess.
Hope it's a permanent fix. Thanks guys for cyber diagnosis
