I do... my best mate has one about that age but I'm pretty sure it's gas. It's been languishing under a tarp for about 15 years. His wife would probably let you have it just to get it out of her back yard. My friend would probably shoot you first.
Wish I could help you. I hate seeing it sitting there. Hasn't ran for years. Wish he would pass it along to someone who would take care of it; he barely knows how to put oil in it. Something like what your doing would be good.
Don't hold your breath, but I will ask. It's in KS BTW.