I have just finished the top half (formers and stringers together but not sheeted) of a Top Flite Focke Wulf 190, to discover that the building board I was using has warped. This has caused the fuselage to have a warp as well, approx. 1/4" along the full length.

I'd be extremely grateful for any advice in correcting the built in warp.

Many thanks.

Jack , Need to use ammonia [liquid] can cut it a bit with some water , so its not too bad on your nose . So soak it good , but have to clamp fuse down & put an opposite force to get it to where you want it , & you have to go past that point so that when it drys out it will come back to where you want it . If it is too much strength to pull it over - then you will have to cut out some of sheeting & then soak it to pull over . Good luck !! p.s To soak it use a piece of paper towel or rag .

Fine with Hurri comment !, just once well wet, let it rest for 2 days!!

After you have it like you want it using the suggestions above, you can use a fan on low to gently speed up the drying. But DO NOT use heat or you'll have a worse problem than you started with.