adler barbour

Hey Guys, Has anyone recharged their own Adler Barbour cold machine themselves with the 134a kits from the auto parts stores? Mine is a few years old and I'm not happy with my mounting location. I'm going to move my compressor unit and it is low on coolant now anyway so I figure I will have...

My aged Adler-Barbour seems to run all the time, and one of the copper tubes (about 10 feet long) leading from the compressor to the cold plate is coated with a thick layer of frost. The inside of the fridge itself is just about the right temperature...not too hot and not too cold, so I'm...