Hi all I have got a Bird Thermaline 8738A A 10kW Watercooled Dummy load. It's got a 3 1/8 Unflg (Flash) Connector. Can someone help me how I get down to a 7/8" EIA flansch or even better 7/16. I hope someone can help me. 73 de Michel HB9JAW at Bluewin.ch