Is anyone else having ridiculous amounts of issues with the GDS? Apparently Mazda only goes to 2004, ford - 2010. GM having sporadic readings throughout, with constant signal dropping, inability to perform module coding / activations (Chrysler, Mercedes). Most recent problem I have......2007 Mercedes ML350. Was able to perform coding on some of the modules 3 weeks ago. (I understand I can't get everything). But, went to code additional modules after finally being able to replace them. The option isn't even available. On any module. For any bidirectional controls. none. nada. zip. I'm getting no answers from "Tech Support".