Titan Drawers trouble shooting

I’m wandering if any member have the titan Ute drawers. I have just installed a 2nd hand set. All was going well until I fixer the drawer stoppers to the side of the drawers.

The stoppers prevent the drawers pulling all the way out.

Since I fitted the stoppers the drawers won’t latch closed. They are in the same position as the previous owner had them.

I’m wondering if anyone has had a similar issue.
There doesn’t appear to be anything at the end of the drawers catching on the stopper.

Thanks

Chris