The S A-RB bearings have been through the same process as our A-RB bearings; but feature shields on both sides of the bearings that reduce the possibility of salt or sand inhibiting the bearing's position. The dyna-balance feature eliminates wobble during the retrieve by counter balancing the rotor to enhance sensitivity and smoothness. By using computer balancing; an approach similar to car tire balancing; we are able to redistribute the rotor weight to create smooth rotation and eliminate vibrations. Building upon the successes of Fluidrive; Fluidrive II features a large master gear polished using a wrapping process; increasing the efficiency of the retrieve. The most obvious component of the propulsion line management system is the new propulsion spool lip design.