no no no orings in these injectors they are find i think i have a over fueling problem maybe caused by govnor likage out of wack the high idle stopper bolt is out some with no wire lock on it like some tractors i saw but what i dont under stand that iam reaching 2800 rpm like i should.do u think the idle screw is to low and govenor lekage is making up for the rest to make tach go to 2800 makes me think thats the problem any where from 2400 on up to 2800 raw fuel out of exhaust.nooo i didnt tinker with this i bought tractor like this tell me what u think or what u would do thanks for any help my hands are clear till i hear from u.