Yeh I put on the GPZ vacuum fuel valve, found a few "proper" z1300 vacuum bolts, 3 in fact, so I put them on the bike so I can balance the carbs when ever I want to, when not used I cap two of them with silicon caps and use the 3rd one (on number 2 cylinder inlet) to supply vacuum to the fuel tap, the fuel tap bolts straight on, exact match for the old tap, just had to turn the vacuum pick up on the back of the tap 180 degrees and run as short a vacuum line as possible, works great, although when parked after a long ride and not used for a couple of days I have to turn the tap to "prime" to fill the bowls before trying to start it, guess the heat must evaporate the fuel, apart from that no problems at all, cheers pete.
