Hi had some good help from Hystad a couple of years ago cant thank him enough, got a 3126 allways breaking injector tip o rings cat came did the injector sleeves fitted new injectors it failed the sea trial they removed the injectors and fitted tip o rings it worked fine for one year now every eight hours it is breaking # 6 o ring what do you think, i have been told before fitting a new injector you are to dress the copper injector cup cat Jeddah have never mentioned it done , when i asked they said they would check that was some days ago, nothing gentelmen any ideas.