Hello, I have a Core X9 and always wanted the tempered glass upgrade kit. Unfortunately this is no longer available. Now I noticed the level 20 XT. And when I look at the building instructions, I notice that the basic frame is very similar. maybe the base frame is even the same as the Core x9. I don't want to rebuild everything. Does anyone know whether the outer skin of the Level 20 XT fits the Core x9?