i know nothing about the cylinder your working with but if the casting allows, and the ring ends dont interfere, your better off bringing the rear transfers farther around back. because of its steep trajectory angle the boost isnt contributing near as much to cylinder filling as the side transfers. and thus your efforts should be on the side transfers
this is the problem with alot of cylinders. the ring ends are in a bad location, rear studs are to far forward, and you end up with alot of dead cylinder wall area that could be put to good use