I loaded the Tcrappy blend filters on the BS ISI today, and reworked some level 3 controllers with a more aggressive boost (while preserving the .m-file with the old working controllers!), but it's not fully working yet. I can get st1 on the new controllers, but it trips as soon as I turn any of the boosts on. For now I'm leaving the ISI on the old level 2 controller. I'll look at it again tomorrow.