A method of treating a constricted sinus passageway in a frontal sinus of a patient includes forming an artificial passageway into the frontal sinus of the patient with a tool. One of the members is mounted on one arm of the frame by a holder constructed to deform elastically and thereby to provide at least partial compensation for the variation. The device leaves the first channel and determines an expected location of a second synchronization message on the first channel based on the location of the first synchronization message. A plurality of semiconductor regions are defined in the thin film of nanowires. 5 to about 20 wt % of a pour point depressing base oil blending component prepared from an hydroisomerized bottoms material having an average degree of branching in the molecules between about 5 and 9 alkyl-branches per 100 carbon atoms and wherein not more than 10 wt % boils below about 900\xb0 F.