It is important that the twist be removed! Yes, un-twist and determine a way to hold the fuselage in this position, while you plank the top, then the bottom. Fuselage building jigs are very handy and in some cases necessary to build a straight and true fuse. When building a fuse. I make referance marks on the inside of each bulkhead and on the fuse planking, which are used as alignment references during building.

If all else fails and the fuse. ends up with a twist, all is not lost. Just make sure the horizontal stab. is aligned with the wing and the vertical stab. (fin) is perpendicular to the horizontal stab. There is way more information you need on alignment, which I would hope is in your building manual and plans. However, if you get stuck people here can help you, or email, or PM me nd I will try to help.

Mark DeSchane, AMA 59157