I am replacing the hydraulic hoses on a 1973 International 175C crawler loader. The original hoses have JIC female couplings with a shallow threaded nut which only has about 4 internal threads. The new gates fittings used by the local hydraulic shops use a deeper nut with about 7 or 8 internal threads. The new style hose fittings will not engage far enough on some of the male ends to contact the cone ring and tighten up. Some of the male end threads were left exposed by the shorter connectors on the original hoses, and they have some rust and paint build up. I believe if I could clean up the threads, the new style fittings would thread on far enough to tighten up. Does anyone know of a thread chaser or die that is meant to use with hydraulic fittings?