So does that mean you use the manufactures checklist for each & every flight verbatum for the PA44? & the manufactures Wt&Bal & unfactored Performance data data for each flight? Seriously?
Including using pounds and USG, of course you factor the performance figures for conditions, safety and pilot error. We encouraged a flow pattern backed up with a checklist formed from the POH.
The checklists complied with the manufacturer and with additional items for local variations.