Functions, but needed help. - Timber Creek AR Mil-Spec Buffer Tube

I got this to match the other orange parts on my build. Color matched the other Timber Creek parts well and the tube itself works. Now for my 1-star reduction: the threads were not correct. I had to file the first 1/4 of the first thread because it wouldn’t engage with the receiver. It was as if the first thread got smashed or something. Once fixed, it took to line and careful turning to get the tube into the receiver but it fit and is solid. It functions just fine. Side note, my SBA3 brace is very loose, not sure it it’s this tube or not.