i was getting that problem with weapons on the new version of ply's mod...
when i pressed enter to move the weapon, in game the weapon would be flung accros the wall, i think it's a bug.
try adding a box or something on top of where you want it to go, then placing the weapon on top of the box and deleting the box.
in the editor it looks like it's hovering, but in-game it should be on the table normally.
tell me if it works!
the onion mind probes are coming for your soul...
they take your humanity... and give you...
onionity.