We have and always will back the product and services that we provide. If someone is unhappy or dissatisfied with us, we will make it right one way or another. For those that have adjustment issues with our F100 boxes or even other's F100 boxes, then contact me thru email at melmodela@aol.com or call me at 714-292-8660 and I will walk you thru the adjustment procedures. Thanks for your support Randy Gross