Fruitbat, best to keep the job simple, i.e. utilise checklists instead of committing to memory. I am sure you use the checklists rather than memory for take off and landing, and we do those on a more regular basis than non normals. Fuel crossfeeding or balancing is best left alone unless the non normal message appears. I have never seen a huge imbalance yet if the system is left to do the job it was designed for. Know the recall items, operate the checklists as boeing designed them, but as stated there may be occassions where you will need to operate outwith the scope of the checklist, until then keep it simple. Rgds.