TTT Weapon Categories?

During a game of TTT today I reset my keybinds to default. Now I find that I am unable to select weapons that use keys past 6, which means I have to scroll down to use detective and traitor weapons. This gets me killed a lot. Is there a command to bind 7, 8, and 9 to select those weapons? Gmod options only has the default 6 HL2 weapon categories.