You could just use the time some of you are spending on this problem to practice using a rudder. Very few rc flyers are proficient with it, but proper rudder usage is extremely critical with a twin. It's also the main difference between a great rc flyer and an average one. If you can't handle two engines turning in one direction and maintain coordinated flight you probably aren't ready for a twin. No offense intended. If you lose an engine and can't fly it straight on two engines, you will crash on one engine guaranteed. Hopefully it won't be into spectators or anything expensive. Most real twins out there use two engines turning in the same direction without issue. One of the major brands of simulators has a random engine failure feature on twins. I think it was Phoenix sims. I was at a hobby store borrowing their sim doing some single engine training with a buddy to prep him to take the sticks on my nitro B-25. We are both professional pilots with experience in light twins all the way up to heavy transport aircraft. We also have flown rc since we were out of diapers and can do just about anything the pros do with an rc plane. We still take flying an rc twin seriously and practice single engine flying to maintain proficiency. A good place to start for rudder proficiency is to practice taking off holding right rudder through an extended dead straight climb out. Most rc flyers can't accomplish this simple task and it's harder than it looks. Then start making basic coordinated turns in both directions until you can turn without slipping or skidding in perfectly coordinated flight. Once you master that, practice slips to a landing both left and right until it is second nature. This could take hundreds of flights to master, but the reward is worth the effort. If you don't understand the terms I am using, find someone who does. They probably know what they are doing and can help you. If you want to fly twins, you owe it to yourselves to learn these skills. Another tip is to develop your own method for handling engine failure and review it before each flight. Mine is to call out which engine failed verbally (left or right), take a breath, lower the nose 10 degrees and apply 1/2 deflection of the rudder stick, and 1/4 deflection of the aileron stick, in the opposite direction that I called out. From there I adjust as necessary to keep it flying. I do not recomment trimming, because on final approach when you reduce power the airplane should fly straight again. You might be surprised that these twins can fly just fine on one engine if you learn how to fly them that way. For those of you building scale twins that actually have counter rotating props, continue.