CTU: Default replacement mesh for Sims Store items?

[GnatGoSplat]

Using CTU, I made some reboned default replacement ShirtTee_crew meshes for teen, adult, and elder. They were reboned for full compatibility with Delphy's breast sliders (the ShirtTee_crew meshes are oddly boned and look all messed up with any breast slider adjustment). I'm not sure if I did it right, but they work perfectly. Basically, I just saved the new mesh with the same name as the original.

Now I also have some Sims Store content which has the same tee shirts which appear to use the exact same meshes, but of course, they came with their own meshes instead of using the ones in the base game. I have not had any luck creating default replacements of them. I can open the .package files for them with CTU, but cannot just save a new .package file the same way I can do for the base game tee shirt. CTU crashes when I do this, which I'm sure was not the right way to do it to begin with. Using the base game tee shirt and just saving with the name of the Sims Store item (afShirtTee_crew1) creates a 2nd item in CAS identical to the Sims Store item, but it uses the Sims Store meshes rather than the ones in my custom .package file.

It would be easiest to change the .simgeom files in the Sims Store item itself, but that would be against EULA so that's why I need to make a default replacement.

Any ideas?

[Delphy]

I'm suprised you where able to open valid Sims Store items, since they are DBPP and not DBPF. The only way the Store packages would work is if they are converted to DBPF and I am not going to help with that, for obvious reasons.

[GnatGoSplat]

There's a recompressor tool at MATY that converts them, then the files that get tossed into DCBackup can be opened with S3pe. I understand if you don't want to help. However, all I want to do is make that particular Store item use my mesh (pulled from base game) instead of the borked one supplied with the Store item. That in itself shouldn't pose any legal issues I don't think.