3 out of 3 do not fit - Swampfox Killflash Honeycomb Grid

I purchased 3 of these Swampfox killflash honeycombs so far, for my two Swampfox 5x30x56 Kentucky Long Scopes. One bought a year ago which will not thread into either of the scopes, I even filed the threads down some, to make it fit. Now 2 more bought in last week or so and guess what, they will not screw into the scopes either. The weird part is that the 3 inch sun shades screw into and fit perfectly on both scopes. that makes 3, 3 killflash honeycombs worthless. The reason it took a year to buy these last two, Opticsplanet was always out of stock, when I went to buy. I don't want to waste my time or money shipping them back.... I'm fed up with defective stuff.