Quoted from ab3:any chance i should use a white light instead of blue (would that appear brighter?). Any other suggestions? Coin taker doesn't seem to make brighter flexes. Thanks!
Try a different bulb, you may have a dud.
Measure the voltage AT THE SOCKET and make sure you have at least 6.2 AC volts.
I did not have any white Flex to try, so I don't know if they are brighter.
Try aiming the Flex around. It seems that slightly upward gave the brightest glow.
If there is an "E" clip on the end of your flipper button, don't aim into that (it's metal).
There could also be a chance that the Flex have changed over the year since I bought them, or maybe batch to batch? Maybe the blue flipper buttons vary batch to batch?
Try 2 Flex LEDs (steal the one from the other button) and see if it is still dim?
I got a bunch of emails from others who did it, how is everyone's brightness?