The forks are Shocktech. I had exactly the same forks on my Zaskar when I built it in 94, mainly because I could not afford a pair of Pace forks.
I would have thought the elastomers had long since turned to goo. If they still work, then just service them the same as you would Pace, or replace them with GT rigid, Pace or whatever takes your fancy.
Just looking over the bike, you have some nice original kit there, Turbo saddle, Zefal bottle cage, Middleburn chain rings(?). That's a real early 90's build.
Cheers - and yes the big and middle rings are Middleburns.
Very chuffed overall. I won't say what I gave for it, but lets just say it wasn't listed on eBay very well & I took a flyer based on one terrible picture.
It's not about getting what you want, it's about wanting what you've got.
Liberté, égalité, fraternité.
WANTED: Middleburn RS1 non drive side crank - 175mm