Looks fine to me tbh. I work at those all the time.
The leak can be fixed easily, but only if you are used to it. The ram can be repaired in about half a minute, or a new ram installed, although not needed really.
Any chunk out of air shutter won't matter just as long as the air shutter is adjusted when using an analyser. The actual air adjustment door is below the door you see. (The door you see is just a seal off door for when burner not running and is in fact not an essential part at all and not used on other burners)
Is that not a normal air shutter door?