I have a Caretaker system and need to replace one of the "99" jets. The jet broke off at the point between the "teeth" thereby leaving the bottom half in the pool bottom receptacle. The bottom half is stuck and I can't manage to get it out. Any suggestions? I've tried twisting the unit, but nothing. Looking at a new jet I can see that it twists in clockwise, but I can't budge the broken piece. HELP!!!