I bought the Magnum 108A off of a guy here on RC Universe and you can tell it is almost new. That is why I am running it a little rich now. I will be putting a 15x8 prop on it this weekend and taking it to the field to try it out. I think the glow plug I am using my be in the wrong heat range. Which is better for the engine. An OS-8 or an OS-3 glow plug. I have an evolution glow plug in it that says it is good for 2 and 4 stroke engines
