With some interlocking parts I needed to use the "horizontal expansion" to get a proper fit.
However there seems to be a bug in Cura 4.12.1.
The print time goes up quite a bit, for example 38 to 45m for just a expansion of 0.1mm.
Also it makes random speed changes when printing..... so what should be a constant speed of 60mm becomes some weird motion between 30 and 60!!
You can see a video of it here:
https://www.dropbox.com/s/e8647584r5yheui/20211215_213829.mp4?dl=0