Spacewalkers resort to banging, pry bar

• Story Highlights
• 12-foot, 3,400-pound robot is designed to help with space station maintenance
  
• Astronauts had problems with two bolts, had to employ pry bar to remove them
  
• After conquering bolt problems, astronaut lifts robot to attach 11-foot arms
  
• Crew to test Dextre's joints, brakes before it finishes building robot, likely Monday
  
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