This is why I generally don't recommend folks cheap out by following "internet" instructions on how to modify their trigger and instead recommend they purchase a purpose-built aftermarket trigger. The multitude of parts that make up a trigger assembly each has it's own manufacturing tolerance, and as those tolerances add up what works on one gun might not work on another. With an aftermarket trigger you are not modifying any of your stock components so if for some reason it doesn't work on your particular rifle or you get a faulty one you can easily revert back to the stock trigger.