Hello,
the weight resctriction is because in unrated mode there is no protection in the engine, you have to find the goaround powersetting in the Fcoms, and set them yourself(no Toga)
these ga settingstables are based on single eng. so the weight you will find in the table is for single eng. and should give you 2.5% so on 2 eng you will have a better gradient.
The weight correction according the Unrated mode table is NOT for your actual weight that you have, but is based on the actual
weight you have to get out of the table.(WAT)
which can be more than actual mtow.
so if that weight(table)is 237 and your correction 32, weight for Ga can be 205tons, and that should be no problem. fuel wise.
The Fcoms are not very clear on this subject.
this is the way I read it, and maybe there are other people with different views in ths subject.
S.