I've got a kegerator that isn't chilling properly anymore. It's also making gurgling noises. I've just had an appliance repair guy come and look at it and after looking at it for less than 2 mins (mainly tapping the compressor with the end of a screwdriver) he's quoted about $800 to replace the full compressor and thermostat. Seems overly expensive. Can anyone recommend a more thorough refrigeration company that could take a better look for me please? Photo to show why I'm not too keen to just replace it...