a simple trick to hold the frame in place as you do all this by yourself is to open the slab 90 degrees and slip some shims under it to level it. Make The Door Flush With The Drywall When putting ...

A simple fix is to tap shims into voids between the treads and ... But most stairs are finished on the underside with drywall or plaster, in which case squeaks in these stairs need to be fixed ...