Ok so I know this has been discussed in many threads. But I jsut build a Seagull models Edge 540 ARF 46-55 size. I put a SuperTigre .61 in it and am waiting on my bisson muffler. The stock muffler would cause me to cut to much cowel off and I didnt want that. But everything I have read makes it sound like the Bisson will give me problems, I know its because of back pressure. I dont get it should I expect a problem that will need to be fixed, I dont do 3D ut wanted this plane, Im not worried about mad power jsut as long as the engine runs right. It is already overpowered for what I will be doing with it. Jsut want some info on what to expect, not to mention how I might try to fix it. Im jsut a little discouraged after reading all this stuff I was so excited about not having to butcher my new cowel [&o] Anyway. Thanks.