I bought an older Chevy Silverado truck to use for some projects. It had a few minor issues. I have been successful in fixing all of them except for 1. The passengers side exterior door handle does not open the door. I assumed the red clip that connects the linkage to the handle was probably missing or broken, so I ordered a new handle. I replaced it, and it worked three times, then the linkage popped off again. I put it back in, and it worked a couple of times then the linkage popped off again. The linkage doesn't seem bent. When I pull the linkage with my hand it easily opens the door. What am I missing? Why won't the linkage stay on? Any ideas for a permanent fix?