LOLcakes wrote on Jul 12^th, 2013 at 12:30am:

Markoz wrote on Jul 11th, 2013 at 1:23pm: Do you adjust the TRIM to the same setting (or s close as you can get) as listed on the TAKEOFF page? I do this as often as I can (which depends on if I remember or not). It seems to effect the takeoff performance if I don't do it. :-/ I can never determine my CG, I think that's the problem  :-/

IMO the problem would be easily solved adding a field in 777's ACE, showing ZFWCG and TOCG values during all loading steps (pax + cargo + fuel) as used by another developer. This way, we would have accurate data to insert into the FMC.