I know there are a lot of similar topics, but I couldn't find the exact answer for my question.
I need to describe a situation in which one event preceded the other and I couldn’t do it with simple past and past perfect tenses.
E.g. “I have received my order, unfortunately one of the items is damaged. I don't know whether it was damaged during the transportation or had been defective from the beginning.”
I know that the second event is preceding the first; therefore I should use past perfect tense, but I can’t understand how to implement it in abovementioned sentence. Instead I used “was” because the action is over, and past perfect progressive tense (“had been”) because even thou the action is over it is still have a result as the damaged item.
So is it a correct sentence, or should I rewrite it? And is it possible to use with simple past and past perfect tenses in it? If not, how to show the sequence of events?