Please consider the following non-standard mudding problem:

Two pieces of drywall meet unevenly (old and new) with perhaps up to
5/16" difference in the height of their surfaces. You could even
imagine a few gaps almost 1/2" wide between them, but these have been
filled with Durabond 90, the difference in height mitigated at the same
time. There is no Durabond 90 on the higher surface.

Imagine that at the present state, the Durabond compound forms about a
40 degree angle from the lower to the upper piece of drywall.

I have about 50-60 feet of drywall joints in this condition (as a result
of my decision not to remove my drywall up to the ceiling)!


What is my next best move (multiple choice)?

1) Tape the joint now with all-purpose joint compound, and
reduce/feather the angle with additional joint and finishing compound on
top of the tape. (It would practically be like taping an outside corner
of 130 degrees)

2) Add more Durabond 90 to reduce the angle now, getting it almost flat,
and then tape it with additional all-purpose joint compound.

3) Something else (PLEASE don't say, hire a professional! : ) ).

TYVM for your thoughts!

Bill