Wow, I didn't realize ZPI was still around. I was one of the first tCs with their kit back in 2005. I use to frequent scionlife and clubsciontc. I had constant problems with their kit and had to rework alot of it myself. They even did the install themselves. I tried telling alot of the owners about them but no one really listened. My setup did the exact same thing. Let me know if I can be of any assistance and good luck on your sale!