What do you mean by cold star(cold temp start or it sat a couple of days)? When you say hot starts are easier, what do you mean(High temps or after you have ran it for a while)? If your bike has set for awhile, but you want to go for a ride, then try this, turn your key on and off twice then start it. If it starts easier then your fuel pump is getting weak. If it still is hard to start then your battery is dying.