Get a blacklight. A Pied SuperFire should have areas that are totally patternless and areas that have very very faint pattern to them. It is also possible your animal is a SuperFire Ivory or Highway, in which case you will likely see a dorsal stripe under the blacklight. With both of these I will caution that if you do not know exactly what you are looking for you might miss it so it might help to get someone a bit more familiar with the combos to help you