You might...I took out the pill and clicky. Cleaned threads. Snugged all back up. Reached in and snugged up the clicky innerds. Finally...I notice some flicker when I've been riding in -5deg up to 30deg when I squeeze the middle of the light body. I suspect it's due to the tiny amt of shrinkage that occurs with cold metal lacking good contact in thee cold. Doesn't flicker when I use them anymore though.