I've actually never seen a G3 AIO "in da flesh", as they were never sold here in Australia. And from what I've seen in photos (i'm sorry, but I do think it is most likely The Uglie…
Trag sells new SE/30 tantalum capacitor replacement sets.
http://68kmla.org/forums/viewtopic.php?f=4&t=4884
Info on replacing them is on the board.