a bit more ion/ioff tweaking
a bit more ion/ioff tweaking

albireox/marvin,bretthandrews/marvin,sdss/marvin,albireox/marvin,bretthandrews/marvin,sdss/marvin,bretthandrews/marvin,sdss/marvin,albireox/marvin,sdss/marvin,bretthandrews/marvin,albireox/marvin