If you decide to try to straighten the tabs on the trailing edge of the front wing, make sure they are equal. Those bent up tabs are basically the same thing as ailerons on the wing of an airplane. If you have more angle on one side, that side will have more down force that the opposite side. Personally I wouldn’t mess with the tabs. Creating down force on the front shouldn’t cause loss of ET. Drag causes ET loss. I would say the drag on those wings is very small.