Help installing 40-014 flush

The first step is to install the bracket plate in the door, just like how we show in the image below. 

Step 1: install the 40-014 bracket

With the bracket plate installed in the door, install the bolt into the bottom hole in the bracket. With the lower part of the bolt in the bracket you would then push the top of the bolt in to the top hole. It will give you some resistance, but you just have to firmly push it in. 

Step 2: install the 40-014 bolt.

Take note that once the bolt is installed, it is not made to be removed. You'd have to break it to get it out. That's why you're getting so much resistance.

There really is no trick to it, unfortunately. You just snap it in place with your thumb. In my experience you do have to be firm with it, since they don't make it easy, but I've never felt like it was ever in risk of breaking. Are you sure this is the right part for the door?