Kawasaki does not care. They dont care about the one piece oil filter cover. The rep says the filter is designed to last the life of the top end, which is 3 races. So you will have to drain coolant anyways to do the top end. That is direct from the kawi rep at the 04 training seminar.
They compare the bike to the CRF. You mention overheating, their response is that it is no worst than the CRF.
it is a race bike. Plain and simple. Dont expect anything else from kawi on this bike.