so a further search lead me to the article by Pale Horse .
his description is different from the "how to fix" article on the fuel pump . ( gas tank isn't dropped , axis is via the rear-seat portal ) which method should i recommend the mechanic follow ?
he also talked about re-using the contour screen ( why not the supplied focus unit ?? ) . i presume this is the intake-filter , not the "problem disc" . is this simple to tell the two apart . how would any of you explain this in your own words ?