One really quick question: I have a 1991 Evinrude, 6 H.P. Model # E6REIA. I purchased a used OMC service manual that the ad stated was for a 1991 Evinrude, 2.3-8 H.P. When I received it, I discovered it is for the 1990 models and NOT the 1991's. The 6 H.P. model # in this manual is E6REI (no "A" at the end). Is my motor the same as the one in this manual??? Thanks!