Hey guys, new here.  Have an '08 Grizzly 600 that I recently had the carbs cleaned, new battery, new spark plugs, new air filter, etc.  Work was done about 6 months ago.  It was running fine but knew I wouldn't be able to ride it much for about 6 months.  Added sea foam to fuel.  Now, it will start only with choke pulled out and will only stay running for about 30 seconds with choke pulled out.  It will die and then it won't start back up for a couple of hours.  Will start again but does the same thing.  If I let off on the choke or try pushing the throttle it dies.  I have been doing this for about a week now and it will stay running longer and longer each time...but choke still has to be pulled out.  Any thoughts????