I would definitley consider returning that engine for a different brand. I have seen several of these engines that ran great, however they are a major pain to tune. Seeing that you are new to the hobby, you don't want to risk any dead-sticks and get discouraged over a bad engine.

In my personal experience I have had two of the tower .46 engines and neither one of them were worth keeping. I am not the type of person to give up on things easily and spent 5 months trying to get them to run right and they never did. I read all of the forums and tried everything people suggested and could not keep them running. I recently purchased a Super Tigre .51 and could not be happier.