When I got my unit, my handle was horribly disfigured. It had been cast in such a way that the short parts weren't really perpendicular to the long part. It looked ugly as hell, and definitely wouldn't snap closed.

When I installed a replacement handle, the unit looked great, but the handle still needed to be pushed closed. I assumed there was something bent inside, but moved the fascia a tiny bit just in case. It springs closed perfectly now.

So, yeah, uh, try adjusting the fascia.