The scariest part is you put the wrench on the bleeder and it doesn’t want to turn. You might want to spray some penetrant on the threads way ahead.I've only done two brake jobs and they were many years ago. What pitfalls should I be aware of?
New bleeder screws are not expensive so if you sense the threads have rust on them from the caliber body, you might want to replace them. The other thing is after bleeding you want to snug the bleeders down appropriately so they don't leak but don’t go ape on them.