For pinstripe as well no homozygous have been proven and that morph is out since maybe 15 years meaning for me the same as for the spider gene: it s lethal. Think about the leopard , some animals proven homozygous throwing 100% offspring leopard; but the heterozygous and homozygous phenotype are the same. I really believe the big breeders ahave done those pairing long time ago without giving their results. In a dinker project what is the second step right after hatchling babies with the dinker phenotype? Proving if there is a super form or not!

Galaxygirl i sincerely wish you good luck on this project and i will be so happy to be wrong.