Rsimoes;
Considering that,than you probably got what you ordered... Certain specific things were not stated,as "all new parts",vs "new ring & pinion and traction lock",nothing said about used "carrier or used small parts". Not your fault or anybody's fault,just the way it is.....
As to the "paint" coming off with a towell,if they painted the inside of the case and it was not clean,but may have had a little
oil in it,that will cause the paint to come off and not stick....
MY guess is you got what you ordered and what was promised to you,the quality of work or lack thereof may have not been what you expected.... Granted they could have and should have sprayed the bare metal with something to prevent rust and enhance the looks of their product,but they did not,now you have to do it....
David