I’m enjoying and learning from this series so much. But this is the first time I want to pull out my hair. I cannot get a clean shed with the supp warps. My threading is fine. 121212..33. 121212…44 etc. my sleying is killing me. How do you sley the first (of the 2 supp threads) 3 heddle or 4 heddle without twisting the threads? If my 3 or 4 shaft heddle is after the 1,2 run, then I have to cross over threads 15 and 16 to sley into dent for thread 13 and 14. So I consistently get crossed threads. I know others faced the same situation but I never saw a solution. I’ve tried slipping the thread under 15 and 16. And over 15 and 16. Either way, I get either shaft 3 twisted with its companion thread or shaft 4 twisted with its companion thread. When sleying, What do I do when I get to thread 13 and 14 and and shaft 3 or 4. I have pics if necessary. Help!