Sean

You are correct about the Saito being lighter. I decided to upgrade my OS91FX to a Saito 100 today after discovering a whopping 5.2 oz difference in weight, both mufflers were weighed too. I weighed them both with mufflers on a digital postage scale. The OS91 weighed in at 26.5 ounces and the Saito 100 weighed in at 21.3oz. I hope this will prevent me having to put 8-12 oz of weight in the nose of this Seawind. The plane is gonna fly much better without it and its not going to have a 10inch eyesore of a muffler sticking off the nacelle!

Greg