Already did that, i got keybinds weapon category from 1-6 the rest is missing (?)

Hi! I've somehow unbinded my 7-9 bind's on TTT, i tried to bind my zoom key (the key that opens the radio chat menu etc) so i binded it to 7 to make it open the chat and when i press 7 again, so all f*cked up somehow, now i don't know how to set it back where i can quick swap to weapons 7-9 ! really annoying have to scroll down then click the targeted weapon :( Sorry if this has been answered, i'm just losing my patience meh