Well, I made a couple of short flights from my hometown EKCH to some airports in my region, ENGM, EDDH and EDDB. This time I selected ILSxxx as the arrival. At least it seemed to work each time with landing right in the middle of the RWY's :)
So, I don't know what happened in Seattle :o. I' ll try again, may I am just more skilled now..

But I noticed that some of the suggested STAR's in Rfinder.net really generate some tight and sharp arrivals that may be doable with a Cessna or a Spitfire, but hardly possible with a large Boeing.. Maybe that could have caused the misalignment before? What other flight planners would you recommend?

Best regards
Anders