I am posting this for a friend of mine who is an internetphobic ( if there is such a thing ) - he does however own a 98/99 WR400 so is therefore a top bloke ! He has just recently bought the bike which seems to be running superbly , however , the camcover breather hose which emerges by the gearshift lever ( but is routed to the airbox on my '00 WR ) is discharging white gunge . There is not a huge amount but it is there nonetheless. The bike does'nt use any oil , and the oil itself is not milky or contaminated with water , and equally it does not use any water ( and the water isn't contaminated with oil ). It also soots sparkplugs up , and leaves a sooty residue on the rear mudguard , although there appears nothing obvious to cause this either ( Air filter clean , baffle removed , 168 main jet ) The only problem we are aware of is that the valve clearances are slightly tight. has anyone got any ideas as to what could be the cause of these 2 symptons , and are the connected ? Once again your worldly knowledge is much appreciated. thanks Andy.