Have the eastern rite ordinations/consecrations changed?

Hello. I recently started reading about the controversies regarding novus ordo, and it led me to articles about Cardinal Siri, etc, and I don't know who to believe, since the sedevacantists don't always agree totally with one another. I do feel that you are probably correct, but then one faces the problem of which one of the various groups has the Charisma belonging to the one true Church. I hope that I phrased that correctly. One can only pray for guidance, but in the meantime, one must do what one can. In any case, I read, on your website, that one can receive the sacraments from an eastern rite Priest, so long as (paraphrased) that Priest doesn't go out of his way to make points as to novus ordo, Pope (?) Benedict, etc. Have the eastern rite ordinations/consecrations changed, ie been bastardized, or is it reasonable to believe that all eastern rite Priests and Bishops are indeed Priests and Bishops unless it should be shown to be otherwise?.

Thank you.
Chris Knepper