Sounds like you got a duff one. Call up GW and they'll put it right. Their customer support is bulletproof.
Oh, and the word you want is 'sprues' not 'runners'.
Looking for a friendly wargaming club on the Isle of Wight? Drop me a line.
Sisters of Battle - The Order of Glory Undimmed - 2'500 Points | High Elves - House Cyredeth - 2'500 Points | Bretonnians - The Muster of Sir Jules Estelle - 3'000 Points