My biggest recommendation is if you still have them or if you just got replacements, pop them off, clean up behind them and then take a dab of silicone and put it inside the cap so it is silicone'd to the bolt below so they don't come off in the future. The silicone is easy enough to remove should you need to actually remove your wiper arm but it will hold those little caps on there like nobody's business. I think a few guys tried to swipe mine out in Carlisle but couldn't get them off.
LOL You two know who you are!
