TTT Knive Glitch

We have had this problem for a long time and I’m not really sure why. The knife works fine when you left click, but when you throw it and kill a person you can still pick up the knife. So I deleted our old 1 hit knife and used the default knife included with TTT and the problem still persists. Any thoughts would be greatly appreciated!

[editline]25th January 2013[/editline]

Alright I have done some testing with the knife and its not as random as I thought. When you throw the knife from a rather long distance its a 1 hit kill and SOMETIMES you can pick the knife back up which is bad. If you throw the knife from a close distance it does 50 damage and it lets you pick it back up which is alright since you didn’t kill them. Any input/help would make my weekend, thanks again!!!