Hausbestand gegenprüfen ob alle Vorhandenen Teile betroffen sind. Lieferant baut Muster mit nochmals kleinerem Innendurchmensser (bisher 5,4-0,2 neu 5,2-0,2)
Counter check home inventory if all existing components are affected. Supplier builds pattern with again a smaller Innendurchmensser (previously 5.4 0.2 new 5.2 0.2)
Housing stock to check whether all the existing parts are affected. Supplier builds patterns with even smaller Innendurchmensser (previously 5.4 to 0.2 5.2 to 0.2 new)
House existence against-check whether all existing parts are concerned. Supplier builds samples with again smaller Innendurchmensser (so far 5.4-0.2 again 5,2-0,2)