Perhaps they were damaged last year and are set back?

I've seen some pretty bad looking raffle plants, though I don't know how yours were.

I've read some viral plants do not show symptoms on their leaves and maybe slow growers or not performing (not to get you panicing). I have the few plants that seem slow or just odd. They were bad ebay plants. I am going to test it with a virus kit soon and if it is positive out to the trash it goes.