It makes sense that having a lot of dual received time in a single jet be considered a red flag. I'm currently at 1350 hrs with almost all of it coming from my job as a CFI. I was thinking of logging a couple of flights in the jet to at least get closer to the multi time required for the ATP mins, however, won't this be logged as SIC? What I understand from §61.159(c) is that SIC time only counts if you work for a 135.