Maybe you have bean placing them in the wrong files? I had that problem too, and it turned out that i have bean placing them in the wrong files. The "Parts" have to be placed in the "Parts" file, and the "Sub Parts" have to be place under the "S" file.
I hope this information helped!
sincerely: Elijah Horton
I hope this information helped!
sincerely: Elijah Horton