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My advise, send the razor out for pro honing, and get a cheap eBay razor to learn honing on.

have you tried x-stroke?
also make sure the pressure is on the bevel not the spine.
One other thing HHT if not performed right will not work for you. Sheve test is ultimate indicator of how well...

Grab some magnification device to monitor the edge, this will save you a lot of time.
If you had to do so many strokes on the 8k stone, you'd have been done by now doing a few strokes on the 4k and...