So there is a bug with hitboxes and ModelScale. When I make the hitboxes in the toolbox, this is what is shown:
but in game the hitboxes are:
As you can see, the hitboxes are considerably smaller. I just thought this would be a good thing to expose, as it is important to fix, especially as models among this community are increasingly detailed.
if I remember correctly, the hitbox in the configs have the health, position and sizes, probably you fucked up in of of those, and if by any chance you are doing that in 1.8 forget about it, buggy release.
Try setting the hitbox in toolbox at model scale 1.0. Then, after you have the config, (for example, say your desired scale is 2.678) manually multiply all the position and size values in the hitboxes by 2.6789 and it might work?! I know this technique works for driver positions, gun positions, etc.