I am making a trigger assembly for a pumpkin launcher (trebuchet) and am having a problem designing the ratchet and trigger. (see attached zipped files) I want to see the movement to find the interference. I started with a hinge mates but I do not know how to make one push against the other so I tried a cam mate but had problems with that cause I don't know what I am doing. In real life (I've already made it) it will release but I can't get it to go back into place unless I take it completely apart. The idea is for a force to pull on the link and when the quick pin is pulled the ratchet will trip the trigger. I am not sure if I need to redesign the ratchet or the trigger can you help me please? I left off the outer case for one of the sides for better viewing.