SIXTY-1HATCH

Basically you have one gear that has a built in key and one that doesn't, mine doesn't and the keyway that i looked up on acura parts i bought a couple cuz you at least need 2, i assumed one for the gear and one for the crank pulley. The one for the gear looks like it should be really long or at least twice as long as the keys that i have, is there a larger one, do i double them up or is the small key like the one on the crank pulley actually go in there for the gear, imo it just looks too small like there is a longer one for the timing gear
thanx in advance and i did search just didn't really find my exact answer