Phoinix,
From what has been shown to me if you set the offending engine at ~ .7 VEMD or thereabouts you can fly the full flight envelope without the other good engine exceeding OEI limits.
The training policy at ECD these days is you can chase numbers all over the place yet the reality is you don't need to.
Apparently you do not get "FULL" power in manual. Whatever FULL means.
And you will not get it on a Bell 205 or 212 or 412 either so....................