Before you get too far, see if you can pop off the "convertable" part and pinch the body with a clothes pin, (I carve them to fit the shape of the fuselage) then re-glue the rear part back on, to get a better fit. I tried Terry's (Airframes) white glue method for the seams and, whatta ya know, it works! It is a good way to fill the front seams. The color is bang on, in my book.
She's looking good over-all, and there is plenty of time in this build.
I learn new stuff everyday, and everone here is with you!