We renovated our house 3 yrs. ago We put in all Andersen windows & doors. We have two doors that have never worked well. the kitchen door can't be used at all. The front door is always extremely hard to lock if my husband isn't home i can't ;ock it at all. Since Andersen has 10 yr. waranty on non glass products how do I contact Andersen for help. We bought them all at Home Depot in NJ plese help!