Well it has been awhile since I have had time to build, so I started my Guillows Spitfire a few hours ago. I wanted to post this build on Virtual Aerodrome, but I am still having problems. Sorry. The kit wood was OK but still not great. It is funny because I just bought the Guillow P40 400 series and the wood quality is great. I guess the more expensive the kit the better the wood quality. First I cut out all the parts and sanded them smooth removing the kit print. I like the fact that these kits don't have notches cut out because I like to do it myself, it is more accurate.
I use my sanding sticks to notch out the formers and sand the formers to be accurate. As you notice with Guillows kits the Die Cut formers are never exact to what is on the plans so you have to do something to make sure these kits come out straight. What I use is the side keels, I line up all the formers on the side keel stringer and mark where all the other stringers go and then sand the notches out. Yes it is true Guillows kits are heavy, but they can still fly if built straight. Airplanes don't fly well built like a banana. The best way to avoid the banana is make sure all the stringers fit perfect and are not forced to conform to the formers. More on that later. Here are some pictures.