It might be me - maybe I'm wierd!!!

Find it difficult learning that new fill or groove? Maybe it's a bit more complicated or takes a bit more independence than you're used to.

Try changing what you're listening to - maybe you're concentrating too much on the problem area (bass drum/hi-hat/ride) without knowing it - try listening to another area of your kit - quite a few times I've tried it and it has just clicked into place.