This is good advice to get the CG where it belongs before you fly. A forward CG (nose heavy) will require you to fly a faster approach with little control flare when you need it on landings. Move the CG where it belongs and you will have more control. Don't get a rear-ward CG though as that will give you instability and a faster stall onset when you get slow. CG has a huge role in the control ability and flight dynamics of your plane so its important to get it right. Let us know how it works out!