was done by dealer or i as a MERCURY MARINE dealer could not see warranty repairs , regulator diaphragms and tracker as well as o rings were issued as a result of compressor failure contaminating rails thus the cleaning , now how good a clean i cant tell may have been wiped off i dont know, the sure way to verify would be have them PROFESIONALY verified /certified A#1 GENUINE done , best i can do on the intel ...... trust me