When i bought my house three years ago i was told that the two owners ago used the garage as a second living room and had the the garage door taken out and built a wall there. Then the owners before be put in the garage door and track. My problem is the door is not sealed up just right. I can see daylight almost all the way around mainly on the bottom, and the sides and top only sealed by the white rubber door seal. What can i do to seal this up better and to keep bugs and the cold getting in?