How I sync the dual weber 34s on the baja: Purchased a motorcycle carb sync tool for multi carbs. This thing is good for up to 4 carbs, has 4 rubber/vinyl tubes connected to clear tubes with mercury like a thermometer. Connect one tube to each carbs/intact vacum inlet and the vacum pulls the mecury just like in a thermometer. Hold the engine at about cruise rpm (2,500) and adjust carb linkeage till each mercury tube is at same level. In my opinion more accurate than the unisyn type and you have them synched at your normal cruising rpm. Works for me. Sammie