Originally Posted by
Zephyr
IRC the Hart razors have a secondary bevel from the factory as they are using the "Zowada" method, adding two extra layers of tape (a total of three) for the last finisher, this might be the reason for your troubles.
If you don' succeed with Lynn's advice you can try to put on three layers of tape and take it to the 12K, if it don't help you can take it to a 8K or maybe a 4K to take out the secondary bevel.
FYI: The one you got from me I took back to 1K and reset the bevel and it got only one single bevel.