You might want to run the plane with the 11x6 prop as you are not loading it enough with the 11x4 one.

You should remove the limiter pins and loosen the blue limiter grub screws.

Pull the blue aluminum limiter collars up a bit, and re-tighten the grub screw.

It is NOT enough to merely remove the metal pin.

The blue collar prevents you from moving the needle inward ( or down ) because IT acts as a limiter itself.

Once done you'll find that typically you need to move the needle just slightly past where the limiter would have permitted it to travel.

Also the Evolutions initially are prone to create a grey "goo" that will clog up the muffler pressure fitting.

The grey goo is material from the rear casing being initially worn away. This will stop as the engine breaks in.

However check the nipple often and clear it of debris, especially over your first season.