I get the spring in place, insert the levers, put them through the spring hole, push them together a little bit just to catch a little (all this at around 10 o clock while kind of pushing down on the ejector a little), but then rotate the decocking levers straight up towards the ceiling, hook the spring on with my finger (the hook is easily accessed), then rotate the whole business down while pinching the levers together to snap in to place. Took me a little practice to get it, but now I can do it really fast with no tools.