You have a lot of questions.....Take your Corsair to your local club and ask your questions there.....You can find local clubs by going to the AMA web site and do a club search (ama= Academy of Model Aeronautics)... Now be prepared to be told to put the Corsair away and fly it as a 3rd airplane. To get another high wing trainer, 4 channel. Learn on it with an Instructor and a buddy box.
The reason I am telling you to ask your questions at the local club is....it's difficult without seeing the Corsair to know for sure exactly what you have.....
Please don't try to fly alone again....especially with the Corsair
Good Luck and welcome to the addicition