[member=196811]Hogwarts[/member] If the PL is being pollinated (possibly by neighbour's tree), then the RR at least should also be, taking into account the flowering groups, and then the RR should at least be pollinating the BO. (This is, of course, assuming both the RR and BO have been producing a fair amount of blossom.)
Some of the more vigorous/large tree rootstocks will delay first fruiting on many varieties (even as long as 5-6 yrs apparently) - maybe that is part of your problem, although I doubt it. The transplanting may help this year - a wait and see situation.
Dan's advice about not letting them set fruit 1st year after transplant is probably a good idea, but given everything I would suggest leaving a few of any fruit-lets on the BO and RR to see if they carry through to maturity.
Finally; leaving aside the triploid issue, sometimes the pollen from various apple varieties can simply be incompatible. Again, I doubt that is your problem, but no harm in adding at least one other variety to the mix (providing even more apples for the pigs idc). If you want to ensure early 1st fruiting, then you'll need to buy tree/s with known dwarfing rootstock M9 or M27 - in your case, I would suggest M9. Actually, you might try something on slightly more vigorous M26 rootstock if you find something you fancy on that r/s. Both M9 & M27rootstocks are best staked and M27 should definitely be staked permanently in almost all siting circumstances.
Finally, finally; try summer pruning (shortening) of most (but not all) new year's growth longer than 9" or so - late Jul or Aug. This should stimulate tree/s into developing greater number of flower buds (as opposed to leaf buds) for next year.