opjose, it's a supertigre g-61 ABC with a bisson muffler. It was either add engine or add lead.... Some people have tried building a battery mount up front next to the engine and putting the throttle servo up there too. These planes have a really bad rap for being tail heavy. I just put the biggest engine I have in it. Balanced out right on the money.
I'm going to try out some different programing tomarrow.... Flaperons and spoilerons allong with reduced throws. I'll post the results tomarrow evening. Oh yeah, some have suggested speed will cure it.... I'm taking a couple of differnt props with me.