I have an old Stihl chansaw (041AV) that my dad bought for me in 1979. It has been a great saw. I used it a lot over the years and it has never failed me until recently. The spark plug wire virbrated completely into and now I can not seem to find a replacement anywhere. Has anyone got any idea where I could get my hands on one. The saw has more sentimental value than anything else and I would like to get it going again.Any assistance would be greatly appreciated.