We have a yellow apple tree on our property. I don't know how old it is. The previous house that was here was over 100 years old. It is a very large tree and every year we have been here (3years) it has produced very large mealy apples. Very nasty!! Is there any way to fix this problem? Do we need to cut it back? Any info would be helpful. We also have a pear tree that produces nasty fruit. Would it need trimmed back also to start fresh? Thank you.