Hello, I have purchased the entire getup from bottle warmer to window switches and everything in between using all Zex products. Everything I have used has failed on me in some way or another. My bottle warmer never heated my bottle even from day one. I saw that you guys addressed this problem and I guess I have to PRE-heat my bottle?!? Also while doing a pass my NMU got stuck open, by some miracle it did not damage my engine. Now my window switch stopped working and tech support would not help me at all. When this kit worked it was great but it failed very quickly. I have spent over 1500 on this kit and have been let down. Will you please address this?