I need to install two storm doors. The homedepot contractor measured my doors are: 30 x 79 1/4 " and 29 3/4 x 79 1/2" . I was told I need to order customized storm door which cost double. I found EMCO storm door in store which has 30 x 78 size. Do you think I can use this storm door? I know one of my door opening is 29 3/4, I checked the brochure, it says the rough opening with range is 30 to 30 3/8" . Any suggestion?