Year 2000 johnson 50 (J50PLSSM)with VRO that is a new motor to me. I'm used to mixing 50:1 by hand. Are there benefits to staying with the VRO in terms of motor life span,or is it just a convenience thing. If I stay with mixing my own, how do I modify the motor to disable the VRO function.<br />If i stay with the VRO (not included with my new motor)what do I need to look for when buying one that will work with J50PLSSM model.<br /><br />Thanks!!