I don't fully understand the question but to my knowledge I don't think one can misuse an I/O program. The only downside of the I/O is when it becomes an adjustable. It's best to have a plan or strategy in place and then decide if you're going to go with a 2, 3, or 5 year I/O before it becomes an adjustable.
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Sean Pham
Phamport, Inc.