Quickies are only difficult to fly when in racing trim, otherwise they fly about like an ugly stick.

So what is racing trim? That is where the CG is placed at the rear limit, so much so that the elevator travel from neutral to full up is only about 1/8" measured at the trailing edge. With this little travel, the airplane has to be flown to a landing and after the first bounce it is pretty much a free flight airplane.

To make it a better sport airplane, move the CG forward 3/8" to 1/2" and increase the elevator throw to about 1/2". Since the ailerons are also quite small, you will need to increase throw there as well.