If the Blade 400 is going to be the primary model you fly. You'll have to make changes in the TX to tame it down. If you try to fly a different model, the setting in the TX may or may not work on a different heli, as far as control or response. Best to set it up for the Blade 400 in your case. Then for other models, I would edit it's profile.

Go to Model in the upper bar, click on Model, then click on change. Select the model you want to fly. Say Trex 600, click on that. Go back to model and click on edit. In that window you can make adjustment to that model and not to the TX.. It's still a lot of trial and error, but it works. Once you save it to the system, you won't have to change TX settings everytime you change model types. See attached picture of edit window.

Dave