Good luck with your new model. I hope it works out.
These changes were to address a bear at Marcy Dam in the Adirondacks who learned to press in the bump with her incisor tooth and unscrew the lid until she could pry it off. She is still hibernating, so we won't know until late May/early June after field trials with her if this new lid fools her or not.
Awhile back I was wondering if that smart bear was a female because mother bears teach their cubs.
