Does anyone notice a thud from the motor when starting your Vibe? I notice it especially when you start it warm. It's relatively smooth when starting cold. I was maybe thinking a motor mount, is the front mount most common to go bad?Sorry, I am trying to figure out which things are normal and which things are not so I can replace the parts that are wearing before they cause a problem. I just hate when things go bad when it starts to get cold outside so I repair as much as I can before Winter.ThanksRobert