[Skunkmeister]

of the wing which was low, down a bit to increase lift.

Ok first of all, contrarily to what people think, trim tabs work "backwards".

If you have one wing that is dropping, you will bend the tab up. Bending the tab up or down doesnt affect lift in any way. In this case where we bend the tab up on a dropping wing, the tab creates a downward force on the aileron, which then increases the camber and thus the lift on that side.