As with any resin conversion kit, don't expect the pieces to fall together. If you haven't attempted one, just bring a bottle of patience to your modeling table. Aftermarket companies in general kind of bank on the fact that guys who order their conversion kits already have a good knowledge base on the subject. So, the instructions don't necessarily spell everything out, nor are there diagrams explaining every small detail's exact placement. Not knocking any aftermarket bits at all, just bringing your attention to the fact that resin accessories are definitely not "shake & bake," and the modeler is expected to have done some of his own research on the matter.
So collect as many reference photos as you can, and search the forums here for good info as well. I have a bunch of Cobra Company aftermarket sets, and the quality in each of them is bar-none!
Andy