Hi!
I replaced the fuseholders of my two EIIs, as well as the one of my SP-12 with fuseholders similar to this one:
I find the original ones very crappy - I once accidentally pushed on one as I wanted to turn on the EII, when suddenly some kind of short circuit (don't really know...) happened, and the thing went crazy for hours for some reason... it seems to have a ghost inside...
These fuseholders (above) are screw-in holders, which are much safer. I would buy one of those, as they fit in perfectly and are much more easy to get than the red push-in ones.
Hope you succeed!
Greetz,
Elm.