That's good to know. Some of the earlier versions of LED's were pretty wimpy behind our old lens'.
When I was testing some in my housings, I found that high gloss white paint worked better than the "aluminum" paint I had and even better than the chrome tape that I tried. But some tapes and chrome paint might be even better.
But like was said the first thing to do is to clean the contacts in the housing and the plug, make sure the housing is very well grounded, and that full power is coming through all the wires. Mine were always pretty bright to begin with so I would think that good connections are the place to start.
I've been using 50w halogens in my backup lamp sockets and have been very happy. Haven't tried them in the taillight yet but can't wait to play around.
You have any nighttime pic's of yours with the L.E.D.'s 73?
Paul