Bah! I should of said as much (Experiment mode), but assumed (like you're not suppose to do) that you had already tried this since, you knew the recipes. The recipes your container learns is fairly new, and even then only implemented for a select few groups of recipes. And I had also assumed, as I still haven't gotten around to trying out the weapon stuff, that at the highest end trivials, you would need to scribe a book, in order to do the combine, as you have to with cultural armor recipes.
I still always experiment as much as possible, as even the books that teach your container, often only go to blue cons, and I try to stick with yellows when skilling up.
Either way, I'm glad you figured it out. Grats!
Yther Ore.