I've decided to replace my ageing transom hung aluminum out board motor bracket for one with springs to assist in lifting. My motor is a 75lb 7.5 h.p. 4 stroke Honda. Garelick make a motor bracket for motors up to 20 h.p and 115lbs but they state quite clearly that this is NOT for 4 stroke motors. Does anyone know any reason why I shouldn't use this bracket?