Hi,

This querry is probably more pertinent in this string. I just got my self the WM 80" Extra and intend to put a Moki 1.8 on it. Might go with the 2.1 if I can get it. My concern lies with knife edge performance. Does it require any mixing with rudder application ? I have flown a few Extras and I had to lower the stab on my last one ( 72" 330 L) from the scale position by about an 1" otherwise there was too much pitch to the belly and you can not mix it out at all speeds and attiutudes. It seems like the stab is in the scale position here too. I am thinking of modifying this right off before gluing the fin. But I would like to be sure before I cut wood.

Thanks in advance for any answers