Deathrun secrets help?

Basically i currently run a death run server. Its paid for and hosted somewhere else. I downloaded a CS:S weapon pack that included all weapons for my death run server including grenades. Everything works, all weapons work fine etc. however, grenades seem to be acting strange. Obviously death run secrets use different types of grenades for the trails etc. I can pick them up and they work fine. But, the death run secrets aren’t fixed in place. The trails roll off and move around without staying fixed in place. it isn’t the map because it does the same on every map with secrets. Any idea on what is causing them to move? they are supposed to be fixed in place so does anyone know a fix for this?