The Mexico production recone kits are not using the same aftermarket parts as all the other AM reconers. They are still proprietary produced parts. The QC problems have been isolated to the OEM assembly tolerances. The non-conforming parts are rejected by the authorized Service Agencies that have Legacy experience.
I have not yet seen an AM supplier that can deliver Legacy results. Too many compromises which lead to under performance. Just because it fits is no guarantee that it works to JBL specs.