First, read the man... OK, I won't say it. I am bit suprised noone has mentioned it but Sig kits are cut so well you can just about assemble them without glue! Keep this in mind while you are starting out. You can always gather just the pieces you need for the current step you are on and loosly assemble them before applying any glue. This way you know you have gotten everything right before making it permanant. As a matter of fact, when you get to the fuselage (your wing will be done by then if you follow the directions) this is exactly what you will do. After glueing the formers you will actually take all the fuselage pieces and put them together dry - using rubber bands to hold the whole works together. Once you are at this point it will be easy to tell if everything is alligned correctly because every piece will fit like a glove. Once you are satisified with the allignment you will then start applying glue at all the joints. This is when building a plane yourself is really fun because you will get to see your plane take shape in front of your eyes in just a matter of minutes.

BTW, be sure the pushrods going to the rudder and elevator have plenty of support. It is at this point that it is easy to add a couple more supports if necessary to keep the pushrods from flexing where they shouldn't. I used Sullivan Gold-n-rods on my first LT-40 and they needed a little more support than the stock ones since they were a bit more flexible but they also worked a lot smoother.

I found on my kit that the tail did need a little more reinforcement but when I built the ARF version later on Sig had changed the tail design slightly which eliminated the need for the extra reinforcement. They may have updated your kit as well. Pay attention to how the tail goes together. You will know it if it needs more - it will appear a little weak. If it is a newer design similar to the ARF it will have two pieces of balsa that extend through the top of the fuselage instead of just one as in the older design. The newer design does just fine without extra support.

In the long run, you will be happy you built the plane yourself. Fixing it will be much easier since you will have full knowledge of how every piece is supposed to fit. I hate to say it but chances are you will beat this plane up a bit before you really know what you are doing. The good thing is it is a very solid design and does just fine after being patched up a few times.