bought a new 8 hp 4 stroke yamaha last year and found that i had to pull it over a half a dozen times to fire it up. would much rather pull it once like my old 9.9 merc. any advice on what i am doing wrong or what i could do to improve start up would be appreciated. i have heard something about the ethonal in the gas could be causing not enough octane to help it fire. at the price of gas i would prefer not to have to run high test. its kind of embarrassing trying to start a new o/b this many times.