A system, according to one embodiment, includes: a module having transducers positioned along a tape bearing surface of the module; a roller guide; and a patterned bar positioned relative to the roller guide and module to engage a magnetic tape. The patterned bar has a plurality of recessed regions along a tape bearing surface thereof. Moreover, the patterned bar is not directly coupled to the module. Other systems, methods, and computer program products are described in additional embodiments.