Thank for getting back to me.IIRC there should be no "ring", the part of the TC is smooth like the "new" torque converter
I have no clue why it won't drop in, looks the same. have you asked the seller if that TC was actually installed in the same car as the transmission?
Waiting for a response from the seller wolfsburgautoparts
And take it from there. Cant find a TC on ebay