RCfury, there is nothing wrong with adding weight if you have to, but I prefer to move around things to achieve the proper CG first, plus this keeps the weight down. For a trainer, adding weight is no big deal, but for a profile or any fun-fly type of plane, you would much prefer to move things around instead of adding weight. Learning and doing this from the beginning is good to do because you will train yourself to do this first when you move onto more advanced planes. A little nose heavy is good on a trainer. This will make the trainer less responsive and more docile, thus making it easier to control in the air

Rule of thumb: Move objects around first before adding additional dead weight. Adding weight should be a last resort. Less things to fall off and through the CG off while you are flying.

My thoughts on the matter.