Taking all the following comments into account may I make another suggestion for future readers of this thread. After studying and only after studying the process, in the event you have a wrung-off bleed nipple, one other option is to forget about trying to get it out but using the Trouble Solving process called The Active Test, you could activate this process and lower your cruiser down to the lowest it will let you go. This process actually lowers the cruiser lower than Lo thus pushing even more old fluid up into the AHC RESERVOIR. THEN suck out all the old fluid out of the reservoir and immediately replace with the New Fluid. Granted this might not get just as much old fluid out of the system but I’m led to believe it’s a pretty good alternative option with getting almost all of the fluid removed. Remember you can then step out of active mode and then bleed the Accumulator and the other three wheels as per the PADDO schedule. Please research my suggestion thoroughly, perhaps seeking advice from a veteran MUD specialist such as PADDO or UhU to name but only 2 of the excellent folk on this Forum.