Well, half my trube came out with my dipstick the other day.
I just got a new tube and am wondering what some tips and or trick there are for removal and install? I heard (and seems) its a b*tch! Let me know! Thanks 


http://www.thedieselstop.com/forums/f24/2001-f350-superduty-7-3-oil-dipstick-tube-help-302433/
Try this link MFD It may be of some assistance to you...
My appologies MFD......From the digging i have done on this issue...It seems the tube does pull out of the block...However it is a B*&ch to do and will take some force to remove it...Some that are broken flush are removing them by inserting a screw then prying the remains out....