Have you been able to do it with that? I can’t quite picture how that would work.
That’s using a 3/4” chuck, it takes a little patience to get it adjusted properly. You have to wiggle it around while adjusting to feel it lock onto the screw, and once it does, it helps to push it against the drill while turning or else it will slip off.
My pivot also had marks, not as bad as OP’s pivot. Doesn’t affect the performance of the knife and it was inexpensive, but It would be nice if they used a standard screw. I would definitely buy the EL-01 in every color if it were not for that annoying screw!
My quick review of the EL-01KH can be found here. I should repost a review here, but a little busy with school at the moment EL-01KH Review on RFD
that's a very clever way of adjusting the pivot. Maybe we can get Jackhu/Enlan to carry pivot screws as spare parts, so we can purchase them individually? I would like to have the option to exchange all the triangular, 3-point and 5-point screws with simple slotted ones, that can be adjusted "in the field" with a simple Swiss army knife.