Thought I had it fixed when I tightened the connector a few months ago. Then, after an hour's use of running smooth this a.m., the chattering started big time. I tightened the connector- same. I took out batteries, bent little tabs a smidgen to make sure all was tight-same. Did a reset- same. I have threshold at 0, sensitivity turned down to 4(it still chatters at minimum). Also, was moving at time I got it from Kellyco and lost warranty card. Will Kellyco help me if I need to send it in? Also, I went to 4 different locations-same. Turned on my Compadre, which is pretty sensitive to emi and it was smooth.