Suggest actually using pipe tape so you have more control of threading, they're straight cut / not npt threads so "tightened down fully" shrinks the lengths too much to fit thru board holes, they must be a bit loose to fit into their resoective places. . A decade ago, I was a commercial pipe fitter so I got it all nice and tight, clocked properly, but I can tell you I watched my very handy girlfriend struggle for 3 days before passing it to me. Dry fit dry fit dry fit, THEN assemble. Loctite could be another option as you'll have ample working time. Assemble flat in the ground for best results, but remember you'll have to get screws in thev4 mounts! I dry fit and took pictures, then temporarily mounted and marked all my holes. I used much higher quality anchors as well but then disassembled it totally. And started at my mounts and built the structure out piece by piece as I would any other industrial pipe fitting job i ever did. Remember, there are no UNIONS so each piece fits to the next, if you TIGHTEN a length if pipe into one side, it's going to UNTHREAD/LOOSEN from the other. That's just some quick advice but you'll enjoy the finished product. I also sprayed mine with 3 coats if MATTE CLEAR ACRYLIC(can) to waterproof and make sure ut lasts in the humidity of a bathroom setting. But matte clear goes on all my indoor wood project for a durable finish, easy cleaning, and a solid/non porous surface finish, quick, cheap and simple. Have a good one! Happy new years VEVOR!!! THANKS AGAIN + AS AKWAYS ILL BE BACK SOON!!
Don 
Bret Eliezer 
