"From what I am understanding from what everyone said, the affect on my plane, say if I would shim the leading edge of the wing down, this should make the plane's nose want to point down. Maybe possibly reducing the ballooning, that is if it isn't because of my ailerons?"

Actually, you haven't given enough information yet to determine what needs to be changed. Specifically, when does the plane balloon. At cruise speed? Only at full power? Only at low power? More toward the end of the flight, etc.

Here is what I suggest you do.

Check a low power dive. The purpose of this test is to remove engine thrust from the equation. We are then just left with CG and incidence. Get up high, throttle back to idle and put the plane into a straight down dive. Once in the dive, be sure you send elevator back to neutral (release the stick, etc.) Watch the plane closely. Does it continue straight down? Does it try to tuck and exit inverted, or does it try to pull out to upright?

If the plane continues straight down in the dive test, there is a very good chance your CG and incidence of the wing/stab are OK. If the plane pulls out this may be somewhat normal for a 4*, but it can also mean that you are nose heavy and/or wing/stab are set to low. If the model tucks, you may be tail heavy and/or wing/stab are set to high.

Next, Fly the plane at your cruise speed. Trim for level flight at this speed. This is probably somewhere around 2/3 throttle. Pull the throttle quickly but smoothly back to idle and watch the plane. As it slows down it should gently lose altitude at a very slight nose down attitude. Does the plane climb at all, even a little bit? Does the plane quickly descend? If the plane climbs, you probably have too much down thrust. If the plane descends rapidly, you probably don't have enough down thrust.

Can you do these tests and report back?

Cheers.