As soon as we get the 91 FX I will get the fire wall glued in and then work out the retracts. I know the last one could of used having the mains closer to the leading edge so I will change that on this TTIV plus add a LARGER rudder. again controlled with the Dons Hobby shop Kevlar pull pull that seemed to work great on the last one ;especially when I added good digitals to the flight surfaces[8D]