Which you did. Actually, I had this problem when I was finishing my screen porch a couple of years ago. I solved it but was wondering if there were a better way.
I adjusted the width of the sloping molding a bit. The horizontal molding had a beveled top. Actually, all the molding pieces had beveled tops so that only the front edge touched the ceiling...much easier to get a fit that way, NP with the non-ninety degree corner at ceiling/wall where it had been taped.
I really cannot envision what you are asking about, but I have found on several odd trim problems that it is sometimes easier to create a plinth of sorts and let the trim die into the plinth block(s). I find this to be better than cludging through some of the other rituals.
Here a few examples on more simple straight runs:
Not a big fan of those clunky boxes on the corner of your walls. They actually look like a weekend warrior job instead of a clean job.
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