I was on the final step, replacing the battery. I slowly peeled back the plastic sheet covering the adhesive and bubbles formed in the adhesive as I SLOWLY peeled. When I got to he tapered end of the adhesive, the ends stretched out and and bunched up in a wad when they finally let go of the plastic. I tried (as carefully as I could) using a small and sharp pair of scissors to cut off the bunched sections of the adhesive, saw a spark from the new battery (I must have scratched it, though I don’t see how) and now the new battery is sitting outside in an old crockpot awaiting disposal.