.
???
Going to the GSAL link, I get images of a plane WITHOUT any boost tabs..."33% RadioCraft Extra 330-LX"
I see nothing anywhere on the pages for that plane that mention boost-tab... in fact there's no text, just images.
And it's even a different plane than the "Bran Extra"..
Now, the new image from a different location... (guess how much time I will spend looking for a needle in a haystack when the haystack isn't the correct one).. is a boost tab, as Johng mentions.