Magpie,I was like you my 70 750 sat in my basement for about 10 years till one day I just said to myself you need to get this running again. I rolled it out of the basement into the garage to start working on it,you could not even turn the throttle it was so gummed up. Now here I am with it an 74 750,81 750 and a 75,79,81, Goldwing plus all kinds of parts bikes.