I'm puttying together a GO Kit with a Raspberry Pi as the primary computer for using FLDIGI. However, I've found that when I utilize PTT it temporarily shuts off the serial connection. The computer then detects it again and renames the device. So for example, the device is named /dev/ttyUSB0. I attempt to use PTT through FLDIGI, it activates the ICOM 718 for about 1 second, then drops back into receive. I then check the serial cable name in the /dev directory of the pi and /dev/ttyUSB0 is gone but has been replaced by /dev/ttyUSB1. Obviously, this ain't right. Any ideas?