So, I really dig my new radio (D72A), but it seems like in APRS mode, it tags junk on the end of my posits, and if I try to use the TNC in packet mode, it seems to connect to the remote station MANY times, but ends up failing after a few keystrokes.

Am I doing something wrong? It seems to work just dandy in KISS mode, with the Linux AX25 stack behind it. But, I was really hoping to get more into APRS, and this thing seems to be a failure in that regard.