Just purchased a new 2010 Evinrude 175 E-Tec. It has 12 hours on it and has been to the shop twice due to no accelaration. Mechanic states that the computer says all is ok and that I need smaller pitch prop from a 24 Raker to a 23 Tempest. I find this very hard to believe and am at wits end already with this whole deal. Any thoughts?