Are the v3 DS supposed to fit really snug?

[Philobat]

printed out a set of these. https://www.thingiverse.com/thing:4301691 looks great! but I've found that I'm having to really jam the link pieces into the walls to assemble. disassembly is just as hard, and I think I'll break them after handling them too much. here's a dropbox link to my cura profile. https://www.dropbox.com/s/zyds0ezo6x6zea2/Inland%20Natural_dungeon%20stick%20v3.curaprofile?dl=0 just curious if I should change my settings or if I can sand the parts to have more fluid assembly/disassembly. Thx!

Ryan