Markjsca1,

Sorry to hear the difficulties in locating the a distributor for the Saito 100. I'll keep looking for you.

The Slimline muffler can be found at:

www.slimlineproducts.com or 480-967-5053. They make a muffler specific for the Saito 100. The model # is: 4009S. The S stands for the smoke option. Although, I don't plan on putting smoke in the plane. At least I have the option to use it when I am ready.

If you don't want the smoke option you will need to get model # 4009. The price is $89.99

I love my Saito 100. The weight is only 550 gms. If you go with the YS 110, that is a bit heavier, but more power and more cost. I'm not sure what the weight is on the OS 91 2 stroke.

Considering I have unlimited vertical with the Saito 100, save you money and get the Saito 100. You'll love the sound of the 4-stroke. This engine idles very low 2000 RPM and does not quit.

Hope this helps and good luck.