74 Duster Clutch Petal Doesn't Come Back Up

Hey guys first post here. I am almost done with my first ever car rebuild and am having some trouble with my clutch petal not coming back up. It is a mechanical clutch and I have all of the linkage in and springs where they belong. I get it depressed about half way and it comes back but any more than that and it does not. The car won't start unless it is almost to the floor. I am lost here so any help would be great. I wanna drive this thing!!