I have a 2006 190 TX with a 90 Optimax. I am looking at new props. The Mercury prop selector chooses 21p Trophy Plus as the prop for my needs. That seems like a large pitch prop for that motor. My motor is in the second hole from the top. I am looking at the Spitfire X7 but don't know if the 19 or 21 pitch is what I would need. If you have any suggestions or experience with this boat and these props please let me know.