Been looking a long time for outside mirror for my 34 half ton Chevy pickup. Finally got one. A few rust holes and no glass, but at least I finally have one. Question is: How does one get the upper pin out of driver's door? Does it tap out, or what? I tried a little tapping, but it didn't budge. Figured rather than break something, I'd try to get some wisdom from those in the know. Any info or suggestions appreciated. Thanks. wjb