You have nothing to lose at this point by taking off an inspection cover and looking inside to see if something is not as it should be.
The other alternative is to install it, to see if it has a fatal flaw,
and then uninstall it, if it does.
All things considered, which would be the lesser pain?
....and to paraphrase Clint Eastwood: "Do you feel lucky?"
I'm going to be busy the next few days, but if you need help opening it
up, let me know.-Bob