So I have a Heil PR22 that I need to connect to a FT-950 and FT-991a. I have successfully connected it to the 950. I have a 8-pin to 4-pin adapter for the 950 and wired a 4-pin connector to the XLR cable. The mic works well on the 950 and I use the rear PTT with a switch to key the radio. On the 991 its a different story. I tried to use the 4-pin adapter I made from RJ45 ethernet cable but it did not work as wired for a typical 4-pin mic. I have tried to rewire the 4-pin plug on the RJ45 cable but I cannot seem to get the correct connection. Has anyone successfully built a connector for a 991 and a XLR mic? If I have to buy the Heil cable I will for the 950 but then can I use a simple 8-pin to modular adapter or will I have the same issues? I have limited space and I want to keep the wiring as short and simple as possible. Thanks in advance for any help you can provide.