I was lucky, too. The missing parts were included by TT in Germany before the kits shipped. Also no problem with the hard plastic parts.

If the quality drops now then it is a thing with the chinese manufactorer of the parts. The first parts are made with more accuracy and maybe quality checks to calm the ordering party. With more time passing some chinese manufactorers tend to fall back to a lower level and cause big problems... Until AE would recognize the damage would be huge.

It is all speculation, but one aspect when producing parts in china.