You might try using a permanent marker to paint the bevels of the razor before honing on the Coticule. After 5-20 laps you will be able to see if your Coticule is actually working the edge. You can reapply the ink as often as needed throughout the honing process.
- If it isn't yet working out to the very edge, then go to something like 1200 to 4000 to set the edge.
- If it is working the edge, maybe your downward pressure is a bit too heavy.
When I first started honing razors, it was difficult to convince myself that super-light and even finishing strokes really do make a great difference.
This is something you probably did: Is your coticule lapped flat?
Good luck,