I had one just like that, I sold it to a collector. Now I know you are suffering from late-middle-age-crazy.
All you need to do now is stop bathing and grow a beard!
If the wife finds ALL your new tree climbing stuff, she will get the house, Porche, and everything else. You WILL be left with all the tree gear and the worst bike Yamaha ever made.
The valve train in mine made enough noise to wake the dead. Even after it was rebuilt, I was ashamed to be seen on it.