shaft 222 of the swashplate or movable member 220 the link 274 i s disposed in the cavities 256 270 of the spool 240 and the trunnion shaft 222 the middle portion of the link 274 fits through the slot 272 the pins 276 278 are inserted approximately perpendicular to each other the control spool 240 is coupled to the movable member or swashplate 220 and moves in response to movement of the swashplate a torsional spring 280 is operatively interposed between the control sleeve 230 and the swashplate 220 the torsional spring 280 has an inner diameter adapted to receive the swashplate trunnion shaft 222 as best seen in fig9 and 14 the torsional spring 280 includes ends 282 284 in an unloaded state the ends 282 284 of the torsional spring 280 are closer to each other than shown in fig1 however the drive lug 246 on the control sleeve 230 and or the drive pin 266 on the swashplate are inserted between the spring ends 282 284 to spread them and thereby preload the spring the override pin 268 on the swashplate 220 extends between the override lugs 248 250 of the control sleeve 230 when the trunnion shaft 222 is inserted in the cavity 252 of the sleeve 230 several features of this torsional spring embodiment are worthy of further discussion first the sleeve 230 is coupled to or integrally formed with the actuator 236 thus the sleeve 230 moves in response to movement of the actuator 236 the swashplate 220 serves as the movable member and also comprises part of.