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Hi. Just got my Minolta AF 1.4 teleconverter. It looks great but something is apparently wrong. While it fits on the camera it does NOT fit unto any lens I have—and I've tried it on all of my Minolta lens from that vintage right through to new Sony lens. In every case the front element of the teleconverter (which sticks out from the body) bumps up against the rear elements of every lens and can not possibly couple with each other! It appears that there must be a ring that will couple these together that I did not get, or you did not offer. In any case, until I find a solution this teleconverter is useless. Please advise and what to do.