ejam,

I am looking at the two pictures you posted of the fuselage.

Remember that I do not have the drawings here nor any instructions.

I see a little problem. The fuselage sides are all one piece with doublers at bottom and top.
Those sides are a straight line from the rear wing dowel to the front and also straight from that dowel to the rear as seen on the top view of the drawing. So there is a change of direction at the former just in front of the dowel. It is not possible to have such a sharp bend in a continuous sheet of balsa.

I notice a heavy dashed line on the bottom doublers but not on the top ones.

To have the two straight lines, as seen on the top view of the drawing, there has to be a joint in the fuselage sides just at the rear face of the former. This former is justahead of he rear wing dowel.

I have no way to tell but there has to be continuity (no break) in the pieces closing the fuselage at top and at bottom.

Is there anything in the instructions concerning this area of the fuselage ?
I cannot see a sharp bend at this former with the forward and rearward parts both being a straight line.

Perhaps you can post a picture of the parts that fit on top and on bottom of the fuselage at this location.

Just someting that appears to me to be stupid and a puzzle.

A note here below ___
Do not go by any recommendations to use CA glue. Use wood glue (carpenters glue) and double glue and fillet all joints. Kit manufacturers like to sell a new kit when dozens of pieces fall apart in a crash.
Just a couple of weeks ago, my Skybolt, a fast flying model, landed in the trees at flying speed and came out without a scratch. It is alsofinished with a very stong covering.

I am following along. If my comments are irrelevant, please just disregard them.

Best 2 U

Zor