It's been a while since I worked on a MB with a clutch, I remember how we bled the system. We used a horse syringe filled with brake fluid and a hose connected to the slave cylinder bleed screw.Then just give it a "shot" till fluid comes out in the reservoir. These syringes were large. Maybe an inch in dia. and probably eight or ten inches long. Knowing a few people in the horse business here in Lexington, I had no trouble getting one. You being in Texas with all the cowboys and their horses,you should have no trouble getting one. Good luck and don't despair.You will get the job done.
Bill Lewallen Lexington,Ky.