Hello, I have a 1995 ZX6R and there is gas leaking from my bike. it seems to be coming from the top where the cover and gas cap of the fuel tank is but i have no idea why it would be. is there supposed to be a sealer between the tank and cover/cap? if not, then what could it be? please help, i keep getting a lot of gas on me and i keep having to go buy more gas.