I start and run my Johnson 115 and it runs fine at idle/mid/wide open speeds. After parking at a sand bar for an hour or so, then idle it some, then I try to plane off, it goes dead. I pump bulb 5-10 times and it starts up again and runs at idle, then goes dead. After two three tries I finally get it to get on plane and no more issues. While cold it does idle good. I have replaced water fuel seperator and had carbs rebuilt last year. Drained the gas tank last year after I discovered water in gas tank...any suggestions?