Thanks, Rick!
As for the way of intersecting the rigging tapes I have examined the photos from the Aviattic booklet, WD and a book on Polish Balillas. And I am sorry not to agree with you, Bud. Indeed, in one or two photos the bands seem to pass one behind the other but my impression is that it is a game of shadows tricking our eyes. On the contrary, there are several photos, including one or two in page 21 of Balilla booklet made by Bo, where the tapes clearly intersect. Also, if the did not, it would mean that the wing main spars of top and low wings were not parallel in plan view, which is not a case in Balilla, according to the scale drawings.
Any way, my interpretation will be with those intersecting.
Here are 8 tapes with fishing line sections glued, prepared for airbrushing. I plan to pass the single-piece ones through the gaps in the two-piece ones. Also, probably I will cut (or sand) tiny notches at the edges of the former ones, to allow for one of the lines of the latter one to pass - however, this will be possible only when the tapes are fixed to the airframe. It is also important to note, that the left and right side sets are not identical - because of asymmetry of the wing cellule.