If you can't fix it or find a stock replacement, there is a guy on the TBSS forum that makes adjustable replacements. Kinda pricey though if you just want stock height. $30
You could probably make your own with some threaded rod...
A guy on another forum said he solved the issue with canbus bulbs.
I keep meaning to do this, as I have the same issue with dim leds.
Opening the mirror does work though.