You guys missed my point, which is most likely my fault for being unclear. Trust but verify was meant to refer to the LM. And by mentoring I meant to TEACH. I went with the assumption that the MSgt Load Planner was correct and the LM was a young guy still learning his craft. In that case said MSgt should be teaching the new guy, and therefore receptive to questions as an opportunity to teach.
I've been suspect of write ups before (who hasn't) I asked the question and then on occasion, yes the crew chief/Pro Sup mentored me by showing me his TOs and explained what was actually happening and why the write up was the way it was. Sometimes I was right, sometimes I was not. In either case I learned and so did my maintainers, and as long as I approached it in the correct manner that dialoge actually improved our relationship.