I have a small one-story house built in 1959 that I would like to remodel. I had a friend who is a remodeler tell me that none of the interior walls are load bearing because I have Fink trusses with a span of only 25 feet. There are only two interior walls which run perpendicular to the trusses and neither wall runs the entire length of the house. I crawled up in the attic and confirmed that the trusses do not rest on these walls in the the center of the house near the attic opening, but I only checked three consecutive trusses. Do I need to check further down to confirm that these are not load bearing walls? Should I check every truss and every wall whether perpendicular or parallel?