DO NOT VENT THE CARB WITH THE OTHER VENTS! (creates a vacum) Run the carb vent seperately. You also need to vent the rad. fan. You shouldnt need too much hose as eveything gets vented into the frame under the front rack anyway (on a 450 anyway) Id say no more than 5ft is needed, I used regular automotive vacum tube with T fittings. Also reroute your crankcase breather, get some longer hose for that and wrap it up over the carb a coupke times then down to the crankcase. Make sure you run a bead of silicone around the snorkle going into the airbox, also run a bead around the lip of the AB cover and let setup before putting back on (creates a gasket for water tight seal) and allows you to remove it with no problems. Look in my pics for more info on water proofing.