Hi! We are looking to purchase a renovated 2 story farm house, however we noticed the first floor has large dips in the floor and uneven spots (not so much waves as larger dips on either side of where the midbeam is). In the basement we saw the midbeam is undersized for the home and currently has two lally columns in place under it (but they have not been adjusted). The midbeam is about 8x8 and spans 25 feet. The joists supporting the floor were simply nailed into the midbeam and have loosened and pulled away from the midbeam. Is it possible to fix this issue by simply raising the midbeam, adding braces to connect it to the joists? ie. once adjusted, are the lally columns enough to hold the midbeam or does an additional beam (such as a steel i-beam) need to be added? Any insight on correcting midbeam troubles would be greatly appreciated. Thanks!