Anyone using an Innovate LM-2 A/F ratio datalogger

My luck with wide bands have not been the best, I ordered a new LM-2 it worked two times then it will no longer warm up the o2 sensor so I put it back in its box and bought a Fast unit. The fast unit will not data log.
But it is a great tool for dialing in a carb and my carb needed a lot of dialing in.