While loading "stuff" in the bed of my '07 I noticed that the left tailgate strap was taut, but that the left strap had slack. This was with no weight on the tailgate. Went to the dealer and they said "they all do that. " They also said that they've seen this before and replaced the straps, but that didn't resolve the problem. They contend that the bracket on the bed for the strap is misaligned at the factory and can't be adjusted. Anyone else seen this problem? Thoughts?