I am co-author of a submitted manuscript. I think I found a mistake in a methodological approach in our paper. But I am not sure if I am right. But if that mistake is really there, then some conclusions in this paper could be changed. It will not invalidate the whole paper, but some parts would have different meaning.
I already had some arguments on this paper, so I do not want to point some mistakes to my colleagues. I fear that if I will point to this possible mistake, my co-authors will get angry.
I don't even know when and how should I discuss this issue with co-authors? Some authors are reachable only by email and I don't know if I should ask about this mistake only the main author, or send the email to everybody. Or should I just briefly explain what I mean or send a proper document with explanation why I think I am right?
I am thinking of waiting until review; if reviewers do not point to that mistake I will raise it.
Edit: By mistake, I do not mean that we carried out our method of choice incorrectly; instead, I think we should have chosen a different (potentially more correct) method of analysis.