Well yes you can lean it off slightly to get it to spool, but thats lean on boost.. i wouldnt go too mad and thats down to your judgement. Well safc's arent brilliant but yea they are better at taking fuel out..Whats your fuel pressure? Could up that, get some fuel in lower down, run a bit more boost up top, and trim with the safc. EMU will be fine tho, and would be a lot lot better way to go.