In order to get a really good fit, personal to yourself, you need to make a template of your head. You can include Flaps on your template. Flaps are an ``extra`` piece which comes down from the temples, in front of your ears to blend in / onto your side burns. A stock system would be just the basic head-shape [ oval ] with nothing `extra``, so in order to avoid having to use the concealer products which you say you are using, I would suggest you make a nice template with the flaps on it from the temple area down towards/onto your side burns in front of your ears. I`m not an expert in this area, so maybe Snipe will add a bit more of his expertise here. The stock systems are fine, but for a more detailed/perfect fit for your particular head shape and your individual needs, I would suggest making a template and your next system will be tailor -made for you. Cheers, Paul.