Of course we only want certain outliers in which the desired traits are retained or amplified. SO for sandy crosses, short petals are for the salad shooter, and the long petals ones are to be kept. Crossing PEOY or two sandy primary hybrids, whether this trick will result in more long petal progeny I don't know although I think it might. Mendelian genetics is a good place to start eventhough it is doubtful that a single gene controls the length of the petals in paphs. Even if the petal length is controlled by more than one gene, but if during meiosis and fertilization (i.e. recombination), they are inherited without any domain swapping, we could consider these genes or DNA loci as a single 'de facto' gene. I do notice that lately vendors have started selling these two primary sandy crosses. I would be very curious to see how they turn out. The question is should we try our luck and buy some of these seedlings before their prices become exorbitant?