A mold bonded chassis bushing has an outer housing and an inner member separated by a tubular gap. In \u201cspotted\u201d microarrays, fluorescently labeled cDNA from experimental and control cells is hybridized to arrayed target DNA and the arrays imaged at two or more wavelengths. A first virtual leading edge is defined at a position where is shifted from the first reference position to a downstream side of the subscanning directions by the first amount. A disruptive force, such as a stretching force, can be applied to at least one portion of the multi-microlayer film to partially delaminate the low-recovery microlayer from the high-recovery microlayer to form corrugations in that portion.