Ed,
Using your information the only way to sharpen Tungsten Carbide seems a compromise using a Silicon Carbide (not too expensive) grinding wheel then diamond laps, then comes the expensive one stop answer Diamond wheel
If sharpening Tungsten Carbide never dip in water A NO NO so a slow process.
Surely the seller should have all the answers. OH&S Cobalt is a DANGER in the CARBIDE Manufacturing Process and involves loose Cobalt when ground dont breathe use safe practices.
There is no magic Elixer in tools you pay your money and you take your chances.
An alternative is to make your own Carbide tool holder easy breezy use square cutters throw them away after using the four faces the cutters ie. Heaps of info Google lots of U Tube how to etc. I have such a tool still stick to bowl gouges and scews on the flat. To throw the cat among the pidgeons I grind my bowl gouges at 90 degrees to the wheel I can easy see the correct angle from above giving a slow twirl works for me. When I grind old faithful skews I grind them with an angle bar resting the tool to wheel vertically.
Anyway something prompted you to buy the tools you have put the information back to them, also buying sets waste of time sometimes as a tool junkie it took me a long time bto learn that I mostly use very few chisels especially for Penmaking.
KInd regards Peter.