Serdang Oo Oo is the variety of the jumbo pearl. catasetum redland black cherry is made from crosses between Catasetum jumbo pearl x Catasetum penang.
so for you case the correct labeling would be Catasetum jumbo pearl 'serdang oo oo' x Catasetum penang
by the way, glad to see that they are doing so well
another reason for why a plant is keeping reproducing female flower it is because of stress (that is what i read from a cultivar sheet) but unless or plant looks awfully not doing well, i don't see this would be the reason.
what forum members had thought me is to use a aluminium foil to create a shade/umbrella over the spike to induce a male flower, i haven't try this method but i am running a similar experiment using a cone, made up of a paper, and just let the spike wear the cone hat. (feasible for my setup because it is shaded from rain)
by the way, you mention catasetum pileatum (pink)? is that such cultivar for a pileatum? or is it catasetum pileatum imperiale.
good luck in your experiment