My bike have been standing for a couple of years while I been out of the country. The water drainage tube inside the filler cap is blocked and I get a puddle in there and some ends up in the tank as it is not draining away. I have tried poking bits of wire down it and up it from beneath but its blocked up solid. I acually had the problem a couple of years ago but had to leave it while I was away, Any Ideas? or is it a new tank?