I have a seadoo spx. every day theres is at least 4 inches of water at the bottom of the hull. Cant see any cracks and dont know were all this water can be coming from? also it idles bad. When idling it needs to be choked to keep it running and if i give it gas without choking it will shut off? I have no clue what to do, please help? i have messed with the idle screws but still no help?