My experience is that the local dealership in Houston, TX may or may not have incorrectly performed the recall.
In working with them, I determined that they are a bunch of yahoos.
When I took it to another dealership, at University - before leaving it with my daughter - in upstate NY, they let me snoop around as much as I wanted and we could not find anything. This dealership I would recommend.
But in reply to the question above, the dealership in upstate NY told me that dropping the tank and messing with things can be problematic. They say it can cause things to die that were on the edge anyhow, it can cause fittings to loosen or, if the previous work was maybe incorrect also to tighten.
in particular they said that the recall caused fuel pumps that were maybe on the edge to die just because they were handled.
Not helpful I know, just passing along what I have been told.