The PO of my 06 XK had some damage to front end and had flares, wheel liners and bumper parts removed in the process. When they replaced them, they tried to use some of the push-in style rivets and they don't work very well. Several have already fallen out. Looks like the OEM rivets were a plastic pop rivet. They are still securely in place. I have tried several different style and sizes of the push-in style rivets but none work very well. Typically very loose in hole and will not pull parts together tightly. Has anyone found a suitable push-in style rivet that can be used to reattach the parts or do I need to invest in a pop rivet tool that can install the larger plastic rivets?