Snapped-Off Bleeder

[Cliff Davies <ads.holzher@sympatico.ca>]

Dear list,
While attempting to bleed my brakes this week-end, I snapped off the
right rear bleeder, rusted and blocked. I know the other rear is a new
cylinder, so should be OK. My question is and I haven't checked yet,
are the front caliper bleeders usually difficult? are there any special
tricks to removing them? I don't mind replacing a rear cylinder, but if
the front bleeder snaps that's another story.
Thanks for all the past and future help.
Cliff
73 TR6