Hy, Here is just a modified items_quest file, that allows you to drop quest items you have in inventory, so no need to carry it with you the whole game. --- Example: You started quest to obtain psy-helmet in yantar, and accidently you pick up one from dead scientist, and you cannot drop it, and finish quest. Now you can. It is compatible now with stalker coc 1.4 and 1.5. Install: extract and copy to gamedata folder. UP v1.1: I removed option that items can be sold, cause i think that is good to have it in stash somewhere, just to remember of main story.