I have a 2000 RC51 that pumps water into the coolant overflow bottle every time I am on the gas hard. My ridding buddies noticed a white misty plume of what they thought was smoke. Only to find out it is coolant spraying on exhaust in lower fairing. Friend of mine said Rad Cap was faulty but , is new and rated at 16lbs. So I purchased another rad cap a 20lb unit and tried again, still pumps water out into bottle at high rpms and vents thru hose to cowling. Bike has all new hoses , thermostat, water pump and new rad cap. Bottle is full of fluid to neck when I service water level in radiator bleeding system per Manual. Am I over servicing? Buddy also suggested that I may have a blown head gasket and bike is pumping combustion in to water jacket, could this be? Bike runs extremely well , temp runs around 175 when just cruising. When on the gas and at high RPM's bouncing off rev limiter she runs around 190-200,215. Any of you Bad ass RC51 riders got any ideas what is wrong??