Does anyone run this engine. I was going to run an OS .21 VZ-B in my Kanai III, but I saw a thread in the 1/8 Buggies that says there is a problem with the cylinder wearing out too fast. I have just bought the OS and am thinking about returning it for the Sirio. I know that the carb on the Sirio is composite, and being old fashioned, I don't trust anything but metal.
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