Sad Paphs

[Phyrex]

As you can see some of the Paphs have drooping leaves while others are not. When they were in bloom (just when I purchased them) they were all perky and pointing their leaves slightly upwards. Is there anything I can do to get them back to that kind of position? Am I possibly watering them too little? They're watered every weekend and fertilized about every 2 weeks. The recent temperatures range from 60 to 80 and the humidity is mostly around 50-60%.