Mamiya 645 PRO-TL Front Threaded Cable Release Adapter

The adapter was advertised as being apt for the Mamiya 645 Pro as well as the Mamiya 645Pro TL. In fact they require different adapters, so this one (Mamiya RC402) for me is useless. I would send it back but as it is to the US, it would cost me more than the refund. For the price of shipping I also cannot afford to look outside the EU for the correct adapter (Mamiya RC401).