A method and apparatus allow use condition determination in a wireless device. The symbols include at least two complimentary wild symbols that form resultant wild symbols on related reels or cards. Additionally, the preferred benzoic acid ester frequently interacts synergistically with benzoic acid esters derived from oligomeric ethylene glycols. The bearing holder has a thickness smaller than an axial length of the bearing. The saw-tooth configuration is defined by trip strip sections positioned end-to-end, where a leading edge of a trip strip section has a lower height than a trailing end of the trip strip section, and where the next trip strip section having the lower height leading edge disrupts the vortex created by the preceding trip strip section so that its size is reduced.