I'm working on replacing carpet with laminate and the hallway I'm doing next ends at the top of a staircase. The next step is to replace the carpet on those stairs with oak retreads/risers.
Unfortunately, when I pulled up the carpet yesterday I noticed:
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A big gap (1/2 inch) right at the top of the stairs - basically between the narrow strip of subfloor above the riser and the 'main' subfloor. Pictures below.
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A raised spot on the 'main' subfloor right in the middle of that edge. Looks like during construction, someone banged it up good, there's evidence they tried to push it back down with a screw and that failed, then apparently said "who cares, we're putting carpet on this floor an


