I'm test fitting the upper top spar for the left wing and it rises about 1/8 of an inch above the inboard most 3 ribs. I've not seen anything in the instructions regarding this so did i mess up somwhere or is sanding the balsa portion of the spar acceptable to get an even fit?

Kind Regards

Check the plans to study the balsa sheeting on the wing center section. I haven't built this model, but it is very common for the innermost ribs to be 1/16 - 1/8" smaller so that after being sheeted the wing is the same thickness. It sounds like the sheeting is meant to be glued between the spars, thus ending up with a level surface with the spars.

Yup, after really looking at the pictures in the instructions i can see the higher spar and there is sheeting later after the wings are joined. Thanks

Glad to help. My first R/C plane was a Sig Kadet Mk II; the predecessor to the LT 40, I guess. Enjoy your project.

You hit the nail on the head. The wing center sheeting is the right answer. I remember wondering the very same thing when I built mine!

When you get her built and out at the field, good luck on getting it down. I built one about eight or nine years ago with an Enya 45CX and when the time came to get it back on the the ground it would float and float annnndddddd float. At the time I built the LT, there was no doubt in my mind that it was the best kit I had ever seen. Keep chopping, you will love it

Bill