Oh yes, the original meter boxes on my MC2125 have became so fragile. When trying to change the factory bulbs the other day, the boxes were cracking badly. So I've contacted member "clinic-audio" about some new meter boxes. Note the pictures at the beginning of this thread...those look very nice, and I like how they are vented well. He's supposed to get back with me shortly. You think I should still convert to LED's when using the newer style, vented boxes? If so, what LED's would you recommend to maintain the factory look of the meters?
The radiation pattern you mentioned is what also makes this a little difficult. Part of me just wants to send the amp to Audio Classics and have them restore the meters to the factory look. The amp is all original, purchased from the original owner and still sounds great. Only issue is the meter color faded to pale blue and a couple burned out meter bulbs. I hate to spend all that $$ shipping just for the washed out meters and blown bulbs, although I do have the factory box.