ive decided to take the RM and GM out to inspect them both. i used a cheap magnifying glass to take a better look at the soldering. since i'm not a trained eye, i've only spotted a few that look cracked. but after comparing the soldering from the GM to the RM, the RM looks a lot newer. the GM looks dull and yellow. no build up around anything but the yellow discoloration might possibly be from a something that was applied at the factory. it appears to be a very thin layer. i'm gonna try to use some heat and see where it gets me.