wondering how to get to 90mph with this boat its got 525 factory says 86

I don't know about 90, but 88 or slightly better seems do able with a decent X dimension and labbed props. If they are getting 80 out of 496 boats, then I would think you would get a little better than 86 with the 525's. Maybe the factory is just being conservative with their estimates for legal reasons.

If you can, ask where the factory is putting the X dimension now on the new 35 ex's, and if they have changed it of late.

I was trying to determine the x-dimension on my 35 and Marty Boosinger said the new Executioners were at 19.