I can vary in rpm now. Depending on where I put motor on jackplate. Right now motor is in middle of plate. However I have to be careful with trim or it will blow out. Also noticed with the 4 blade alum, it goes STRAIGHT to pad. Awesome hole shot but have noticed no matter where I put motor on plate, I can not get any rooster tail with 4 blade. A friend loaned me the 24p stainless. Also aluminum is 14.5 diameter. Stainless us 14

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