I'm not entirely sure I can envision the kind of difficulty you are describing (not that I doubt it exists). Can you post an image illustrating the problem?

Yes, please show the problem. You say it happens on transposition but I’m not understanding why Finale’s normal collision avoidance won’t normally apply.

Sure. Here's a perfect example of what happens when I transpose music with tuplets. Take a look from bar 12 on to see what happens (or rather what doesn't happen) with the chords when I transpose the same music that looks fine in bars 2-11:

And here are my Music Spacing settings:

You could apply the Perfect Layout plug-in. It removes chord collisions and many other collisions too.

https://elbsound.studio/perfect-layout/examples.php

If you have Perfect Layout, just let Finale put things where it will. As long as you can tell and know what you have done or entered, just leave it up to PL. PL will fix it and make a beautiful score for you and even parts, too.  MM is not going to fix this. That should be oblivious by now and personally after using PL, I hope they continue to ignore it. Pretty safe there!

Now of course if you have more stuff in your music then will fit on a page, PL will tell you and suggest you reduce the score size some.

Hey, Ernest, thanks so much for chiming in!

I was very impressed with Perfect Layout, as it does a lot of super cool things.

However, as Jan explained to me, "Tuplet/slur collisions are more or less the only collision that Perfect Layout doesn't handle. I don't want to go into details. But that is currently simply not supported by Finale's plug-in interface."

So I turned this back over to MakeMusic in the hopes that someday, tuplet collisions with slurs (and chords, by the way) will register as a collision that's egregious enough to be worth attention.

Yes PL does seem to be somewhat dependant on the type work you do. For me it produces print ready industry standard score in minutes with virtually no input from me. I simply use Finale as it comes and let PL do the rest. Plus the newest verson does a decent job with the parts, too. My last score..................https://youtu.be/tgxPlrAWG0Q

I don't mess with the sound much which I am sure could be a whole lot better if I did but I let NP3 do its thing, again as it comes.

Sorry I could not have been more help.

EB