I've never made a huge DIY blunder or anything, I don't think...I'm always pretty good about knowing when something is beyond my abilities, and when it is, I take it to someone qualified.
I do think I fumbled a little when I bought the aftermarket chrome wheels that I have on the SD now...There's nothing physically or cosmetically wrong with them..they're in excellent shape, look great, no vibrations, and they look almost exactly like chrome-plated factory alloys, buy they are not. The problem is, I cannot find the correct size star center-caps for them ANYWHERE! I can't figure out what brand the wheels are either. I lost a cap a long time ago, and my months-long search for a replacement has been futile.
Mike