I too, have two 10-pitch Courier 72 elements with broken levers. I repaired one by soldering a stiff piece of copper wire in place of the lever to the metal cam and it works great. I also have an IBM 10-pitch Courier element with a one-piece plastic lever/cam (number 015) that I could give to you if you still need it. Send me an email if you want it.
I too, have two 10-pitch Courier 72 elements with broken levers. I repaired one by soldering a stiff piece of copper wire in place of the lever to the metal cam and it works great. I also have an IBM 10-pitch Courier element with a one-piece plastic lever/cam (number 015) that I could give to you if you still need it. Send me an email if you want it.