Well, I've put three of the ARC kits together now, first used epoxy (which fell apart), second used plastic cement (which didnt fall apart) and third used cyano which is holding up fine. Personally I'd go with the chemical glues which really bind the surfaces together, epoxy just seems to sit on top and, once fuel residue gets in the way, eventually falls apart...

I don't have Jupiter instructions (having only put together a ready2 and beaver), check out their website http://www.arcmodelfly.it they appear to be thinking about making instructions available (but not yet), a flying buddy of mine has a jupiter however and I can ask him to see if he still has the instruction sheet if you need it.

Regards,
Andy