Surprised by the splice count in one apartment building

Ran into the same mess in a 40 year old building last spring. We ended up replacing the whole riser in one shot, took two days but saved us from chasing ghosts for months. The splices were all corroded in different spots, so patching one just pushed the problem somewhere else. If the line is that chopped up, bite the bullet and pull new cable, you'll sleep better knowing it's solid.