Several embodiments of cleaning systems using polyelectrolyte and various associated methods for cleaning microelectronic substrates are disclosed herein. In particular, it relates to providing OML with a recognizable relationship to mask and phase-shift mask techniques. Each curves downwards so as to clear the wheel over or near which it extends and then curves to present a distal end section at least approximately parallel to the surface on which the stroller sits. The locking journal impinged upon by the tightened ejection force accumulator can be slowed down andor dampened in the latching movement section and can be placed in the latch region.