Clearly the feed is obvious, going into the T between carb 2 and 3.
The connection on the rear of the carbs is an "overflow" (for want of a better word), where do you stick this to?
I can't just vent it to atmosphere, one way valve back into the feed or what?

ta
Chris

[Edited on 29/5/06 by the_fbi]

Its only a vent rather than an overflow, there will be no fuel flowing back through it so just vent it to atmosphere or a catch tank

OK ta.

I presume if a float sticks, it'll get messy from there?

Possibly, but on the bike it can only either vent to fresh air or back into the airbox (cant remember which) so I wouldnt think much is expected to come out through there even if something goes wrong.