So did I, first try actually Look, I´m trying to help him like I´m always when someone asks serious question and I know the answer. If I don´t know the answer, I don´t reply, simple as that. Now I´m not saying you aren´t doing the same, just in some cases better advice can be given, that´s all. In this case, your advice wasn´t "wrong" just incomplete I would say. What´s the point of using rotor that fails like that when there are at least 2original replacements that could do the job better(mono trial or trial zone) and for cheaper as well???