Originally Posted by
bboy314
Douse with oil, try to wedge a small flathead screwdriver in the remaining adjuster bit, and pry open the lever body a bit with a larger screwdriver while turning the adjuster bit out.
That's what I'd do.
Easy out in the adjuster. It should already have a hole. And gently pry the slot open. Not enough to permanently deform it, but just enough to relieve some of the pressure on the threads. Try not to damage the threads in the process.
A little penetrating oil wouldn't hurt.