I just got the H001T back from my gunsmith today, after removing the firing pin and inspecting the bolt, he said:
Your firing pin was warped slightly from factory. One side was concave, the other side just slightly convex, and the firing pin spring was too stiff in my opinion. Because the firing pin had some travel, it would sometimes travel enough to cause a primer strike, sometimes it wouldn't, being impeded by it's limited range of travel, combined with the stiffness of the factory spring caused the irregular failure to fire.
So he removed the firing pin, spring, straightened and polished the firing pin and edges, installed a lighter factory spring, AND, polished the outside edges of the bolt itself. (Because it was so difficult to remove the receiver cover by pulling the cover backwards as is shown in the dis-assembly videos. When I'd remove the receiver cover, the bolt would always get stuck inside the receiver cover. Now it's as smooth as silk, and slides on and off effortlessly, keeping the bolt in the battery position. He also sharpened the end of the firing pin, and showed me the new primer strikes on the 22 casing which look like the primer strikes on my CZ's .17 HMR casings. Awesome.