I started my (3 years only) motor mech apprenticeship 1946,. RAAF radio / radar 7 yrs,. then TV service very many years, b'cast radio studios operator etc, etc now retired..That's why I was not too unhappy when I bought my 'latest' s/hand Camry a few years ago and found out it was the last of the carby models. . Driven around Aus twice in Sigma wagons. K.I.S.S.! Certainly i would get the vehicle back to Perth and to an authorised Toyota agency. But even then - who can one rely on nowadays. Perhaps the original diagnosis was wrong and now any service, repair, approach is going around in circles. Our 'cleverness' brings with it very tricky troubleshooting. Good luck. Laurie Edward ... on Facebook.. Rottnest Island etc my favourites. VirtualTourist.com 'australia2'.