I HAVE A COUPLE OF HUNDRED DOMESTIC FRIDGE FREEZERS NEEDING NEW R600a COMPRESSORS. ANY IDEAS AS TO WHERE THE CHEAPEST PLACE TO SOURCE THEM WOULD BE? ALSO I HAVE A PROBLEM WHERE THEMSTAT DOES NOT CUT OUT SO COMPRESSOR IS CONTINUALLY RUNNING. TRIED NEW STATS BUT PROBLEM IS EXACTLY THE SAME. AM I MISSING SOMETHING DEAD OBVIOUS? ALL ADVICE GREATFULLY RECEIVED