I have a 1999 Johnson 50 hp outboard, J50pleea. It's run well all summer, but now when I go to start it for the first time of the day it doesn't want to start unless I use some starter fluid. After it's started it runs like a champ and will start after that for the rest of the day until it hasn't been used for a few hours. I'm feeling that maybe the choke isn't working. I just need a little help on where to look to first see if that is the problem and then where to proceed from there. Any help is appreciated, thanks.