hi guys , what is your view on replacing ice machine compressors , my service manager says we must order from the ice machine manufacturer, scotsman hoshizaki , manitowac etc , we do a lot of ice machines here, i cant see the difference in ordering it from the parts house , as long as it is the same model no , manufacturer, volts , hz, connections refigerant etc , i reckon the only difference is the higger price and the delay in delivery and cost of freight ??, does he have a point he reckons they are suplied as different models to to the ice machine manufacturers , but i am thinking same part number ??.