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If your hone is lapped flat, that should not be an issue (if it's not, lap it), but since it is... Use the X-system (the one championed by X, not the x-pattern):
Start off by pressing with the heel...

Good show. Remember to test all parts of the blade (heel, middle and toe) and both sides of the bevel (face and back)

It's a slow cutter so it should be ok as long as you test it every 10 strokes or so. Once the performance stops improving all along the blade, you should give it a shave-test.

You're probably past that stage. When it starts shaving with no lubrication, hit the yellow and finish that sucker off.

Since coticules are slow cutters you may want to establish the initial bevel with some 1000 and 2000 grit wet/dry sand-paper before finishing it off on the coticule.

There is a thread with excellent advice on honing with a coticule (coming from Randy). Check it out as it will help you with your predicament.