I was succesful in getting all the servos on the front rail, it balances this way like it should. I am having a problem getting the Evolution 46 to run with a Bisson pitts muffler. I burned up one before I realized it. I could not get the motor rich enough. Right at 1/2 throttle the motor would be too lean. I kept making the HS needle rich until I noticed fuel coming from around it, I had unscrewed it fully. That won't work.. I replumbed the original fuel tank with brass because I felt that the plastic lines that came with the tank were too small on the inner diameter, drilled out the clunk, and finally plugged one of the exhaust tubes. This all seemed to help, but didn't fix the problem entirely. I took the second motor from another plane, it is only about 1 year old, the other was at least 3. I hooked it up, much better compression, but while it ran reliably, it too got too lean as I gave it throttle. I didn't run it long like this, needless to say. Next step is to put the original muffler on it, and try that. If that works, then there is the issue of the cowl which is already cut out for the Bisson muffler. There is no baffle in the Bisson, I am wondering if that may not contribute to the problem. I wanted to maiden this thing this weekend, now I wonder if it will fly this month.....