Paul, nice plant... I love the spots on yours...
I had one similar to yours but it died after few months...
I recently bought a new plant, which happened to have bigger flowers, but almost no spots, or better said, so light in color that they are almost invisible
One of the tricks with this species is to force a rest period, cutting off all flowers spikes and letting the plant rest for few months... otherwise, the plant will literally bloom to death...
Neb, you should get one
it's a great species and very "undemanding"