polaris slh 700 wont start ! hi people, just bought my 1st jet ski last week polaris slh 700 1999 or a 2000 cant remember , anyway went on viewed it guy started It up on hose bang 1st go , took it out for a water test started no problem , had a go felt good plenty power , so I buy it take it home try to start it to flush it wont start , I farted about with it dry plugs check for spark still nothing so I phone guy , talks me through how he starts it try this, nothing , got new plugs nothing , noticed 1 plug doesnt seem to be getting petrol put small amount of petrol down this cylinder bang it starts and revs turn off try again no problem leave for 5 min try again nothing !!! took carbs off cleaned and blow them out put back together no start, tryed a wee bit of petrol down cylinder again but wasnt for having it , hard to tell if plugs were wet because there new