I was able to get it to work by lowering the pickup. Be careful! I lowered it too much and the screws actually came out. It was a MAJOR pain getting them back in.
This is a very simple problem to solve. For $10-$20 at any Home Depot, or it's local equivalent, you can get a screw driver with a set of interchangeable heads...flat-head, Philips head, and Allen keys. I've been using such a set for a decade or more. I forget the manufacturer, but it was cheap, has about 100 pieces to it, both metric and English measurements (for the Allen key sizes anyway), and it has worked just fine for a multitude of projects from motorcycles to guitars...just come straight down at the saddle adjustment screws, and then you'll never need to concern yourself with swinging an allen key out over a lowered pickup.
I don't have an 89f, but I do have an old Ibanez with a Floyd that has the saddle adjustment screws in the same place as the bridge on the 89f...never occured to me to try swinging an allen key out past the pickups. It's not necessary. I've been adjusting it this way for years on end, never a problem.