I love to teach - in fact I teach several classes for my hospital. I really enjoying fostering learning in new grads or nurses unfamiliar with my area. I have to agree with you though, I am not enjoying precepting. I am precepting my first new grad and it is so hard for me. I don't do well "letting go" It's easier for me to show her how, rather than let her do it herself.
Like another post said, it's unfair to have the same assignment with a new nurse. the first week, we had to do everything twice. Once outside the room, and once inside the room. That takes up a lot of time and of course we had a full assignment load. The next week was even worse - we got more patients than anyone else. After all I had a helping hand! It's really unfair to treat our new nurses this way. They don't get the training and development that they need, and as soon as they make a mistake, they get eaten alive for it. Lucky for my new RN, she's amazing. I can't believe she's doing as well as she is. To be honest, I'm still surprised when she shows up in the morning!
I think that being honest with yourself about your strengths and weaknesses is important in nursing. So precepting isn't your strength!?! Big deal. Maybe you should talk to your manager about how you can shine in other areas.