Just dug up some planes for some pics. The 1/2 A speed did torque rolls on takeoff, and needed more up than monoline would give. That is why it was given to me. It seemed fast and some trim tabs were added for more up but that was the end of the experiment. The other big foam delta was for rc but could work for C/L.Likely a .40to .46. Justhave the leadouts an inch or two behind the C/G. See if Ican load pics.