I purchased the Nitecore Infinity Defender in the beginning. I got it and it really didn't work well. Kind of went back and forth from the the strobe to high and a not so high. I thought there would be a great range of brightness. I have followed the instructions and I just can't seem to get it to work like it should. I finally put it away and recently picked it up again to try it again and get the same results. Does anyone have any suggestions?