Unfortunately I have a similar issue and am also looking for a solution, so instead of writing another post, I will piggyback on this thread. I hope that’s OK.
I would even be willing to manually adjust each slide, but having negative 2000+ px margins and a lot of combo classes just for the cause seems quite dumb to me (hey, I’m the dumb-user over here), frankly. Of course, automation would be the best (without an additional code just because my plan would not support it).
Especially due to the last requirement, the solution offered in this thread did not suit me. And that was suggested almost around 2 years ago.