Ok peoples, I just came across a set of forks i've been after for the last 10 years on eBay for my bevel. I can't afford them, but it took me to the Back to classics website. I use the website because they have a great parts breakdown. Anyway I went to their homepage, and low and behold the 851-916 has been declared a classic by them. They are asking if they should get into spares for our bikes.
So it seems pretty obvious to me they should, as then there would be at least a one stop shop for parts. The prices for their bevel parts seem reasonable-ish. Although I haven't actually brought anything off them.
If you think it's a good idea. Drop them a line.
https://www.ducaticlassics.com/news/ducati-desmoquattro-851-916