Dark spots on leaves, flower spike and buds

[AlaskanTransplant]

What should I do about these spots on my plant? I noticed 2 of the bulbs are getting black spots on their leaves. Both of them are in bloom and one has spots that are showing up at the base of the spike as well as at the base of the buds and on the buds themselves.

The entire plant is in bloom but it seems that only 2 of the bulbs are effected by these spots. I included pics of the affected bulbs and leaves as well as a picture of the healthy spike for comparison.

Further more one of the bulbs lost its leaves and doesn't look all to good. I was thinking of removing it altogether at the base right above where it looks like there might be some new growth.

I am new to this plant, its a den hybrid of some sort which I picked up on sale out of bloom so I'm very excited to see what the flowers will look like. Any help you can give me to help see this plant through will be greatly appreciated.