I've been out of R/C fora number of years and pretty much sold most of my stuff off. I did, however keep a MK Thunderbird 40 model kit which I am now starting to build as I'm getting the R/C bug again. One question. What's the best way to build a double tapered wing straight without any twist? The wing has a full symetrical airfoil but the section of the ribs from the back of the spar to the trailing edge appears to be straight (or flat). I was thinking of attaching all the ribs to the spars then tacking all the ribs to the trailing edge sheeting.