L E D Bulbs In Stock Gauge Cluster

So last season, I bit the bullet and did the swap. First off, I gotta say.....HUGE improvement. Made me like my stock gauge cluster all over again.

I changed all of the bulbs, but the "low battery" indicator light.

My issue....

After changing the high beam indicator bulb, I've noticed it doesn't seem to come on right away? The lights need to be on for a few minutes and the high beam indicator used for a minute or so before it will illuminate. Once it comes on the first time, it works flawlessly for the duration of the drive?

if I manually pull the lever in (like you would to flash someone) it lights up right away....but will only stay lit while the arm is depressed? Otherwise, the above has to occur?

I initially though it was a bad bulb, or the bulb in backwards (polarity reversed), so I both switch and switched them around an there was no change. I then assumed it might be an issue with the cluster itself, so I put a stock bulb back in....and it worked flawlessly?

What's the deal. Is this a polarity, or a voltage issue with the LED bulbs?