"I have retrieved and examined one of the corroded torsion springs.""I need to retrieve and examine the corroded torsion springs from the ballistas.""After applying some tests to the torsion spring, I'm sure the corrosion was caused by a defiler's magic.""I need to bring this spring to a chemistry table to really get a sense of what happened here.""I've discussed the cause of the corrosion with Siegemaster Denstarin.""I need to tell Siegemaster Denstarin what I've found with these corroded torsion springs."