[Hal8000]

Are the wear marks resulting from the steel ears on that strut assembly that's attached to the trigger? If so, then it's normal... It's not good, but it's normal... The slide is made from Zinc and is much softer than the steel of said component... I rounded the tops of those little ears to minimize the wear...
Pictures would help. Use a free web host and link to them. Photo bucket or Imageshack will work...