I have a Mako 22 boat with a Johnson 250hp (94) vro motor. I will start up just fine and run most of the day with no start up problems. when i cut it off to fish and go to turn it back on and it will not start for nothing. it will turn over and over . it will finially start after about 30-40 min, then run perfectly fine the rest of the day. Anybody have any ideas?? i have had it serviced, check out good.