Phillydes...Thanks for the response. Did you try to tweak the brass tabs inside just a tad upwards? I am looking at mine mini pipe with the regular batteries pushed all the way down. It seems you would be able to fit your batteries (since your batteries are only 1.6mm longer) if you just lift those tabs up a little. I did the opposite to mine... I tweaked them down a little since the jewel cover kept popping off. You can use needle nose pliers if you decide to do this.