I've seeked one of those, but I didn't find any. I can tell, though, most differences are convergent. As an example, there is the famous double in Psalm 2 between "accept discipline" (LXX) and "kiss the Son" (MT). Those are different orders, but
both make sense, and
they don't contradict each other. Some variations are weird, though. Most notably, genealogical details and patriarchal lifespans. I don't know how to deal with that, but I tend to favour the Septuagint take.