I used to use a CG Lock in my Integra but it also would come apart like Caroline described. The screws that attach the CG Lock to the buckle would stick out and scratch the seat belt and that is a big NO-NO. After seeing that, I took out the CG Lock and just manually locked the seat belt.

Another cheaper option is to use a child safety seat locking clip. It works like the CG Lock but is not as readily adjustable. It looks like the item below:



I still prefer to lock the stock belt because the locking clip requires a lot of adjustment to get right.