My Saito .72 is mounted with the thrust washer about 3/32nds inch further forward than the plans. I removed the built in right thrust by installing another firewall. With the battery pack installed above the firewall recess box, it balances perfectly. I have about 10 flights on my Fokker DR1 and am becoming comfortable with using the rudder for landings, as it is extremely vital to keep the plane pointed straight forward when it touches down. No wind or make sure you land directly into the wind or else. It will stand on it's prop with the .72 and a 15-4. Probably not very prototype! Very strange behavior at first as the tail tends to drop a bit when turning with the ailerons. Just bump the rudder for a second as you start your turn and it looks prettier, but once you get used to what it acts like, it isn't scary anymore, and flys fine. Aileron control becomes more commanding in turns with increased speed. With minimum aileron throws, it's pretty mushy on barrel rolls, and may not successfully complete one. I just increased the throws but haven't had a chance to try the barrel rolls again yet.