AtoZ and dinobot,

I never got a single hit of a dead base yet so far, a week of testing. I screenshot my own screen to take full elixir collector level 11 and replace the the below bmp file in the images folder, still zero hit.

E11F9 in Elix1 folder
e11f9 in Elix4 folder

I'm using the same pixel size as the original image, saved as 16-bit BMP files.