Review on KOTTO Coax Cable Crimper Kit with Adjustable RG6 RG59 RG11 Strippers and 20 F Compression Connectors: Perfect for Professional Cable Compression Tasks by Jarrod Zuvers

It took me several attempts where I did everything perfectly but the fitting slipped. It turns out that if you think the cable is fully stuck in the fitting, it most likely isn't. It needs to be pushed, twisted and pushed some more until the insulation is visible through the joint, fitting snugly or almost snugly against the hole behind the copper wire. And the copper wire will be where it should be, even with the right end or a little beyond. Then the compression works, do not tighten.