Does anyone know where i could get the use of an Imperial die set I need to deepen the threads on a heat exchanger which I think is American made (in a French van ???? ) I think the size im looking for is 1 in. I bought a new exchanger (internet ) but 1 of the ports has a thread thats not deep enough and i think it would be quicker and easier to deepen the thread than return it and have part replaced ,Im in the Kildare area