Although there's a problem with the smallest piece (see photo of broken piece), it really doesn't matter. I don't expect to be removing/reinstalling the largest piece, so my "solution" is to just use CA glue to permanently attach the largest piece to the transmitter base (although, to allow repairs, I will only be gluing it to one half of the transmitter case). As for the two largest pieces, they appear to be of very good quality.
Truely did a wonderful job with all my parts. These are some of the best 3D prints I've seen. Really great work and a quick turnaround time too. Very transparent and communicative so I couldn't ask for more!
3D Printer Filaments 
