I'm going to sister a joist that has been notched in the middle of the span for a shower drain, and ended up having some rot from drain leaking. Id like to cut out the notched/rotted part out, splice new section to it, along with adding a sister joist to it. What would be the best way to splice in new wood? The splice would be in middle pf the span. Could I get by with just cutting out rot and sistering new joist with glue and nails, and not try to splice an additional piec on to the original joist?