ORIGINAL: majortom-RCU
Actually the building up of diameter with masking tape or other paper concoctions is an old trick that I've put to use many times over the years.
I decided to try this "OLD TRICK". I just ordered 3 ft of T170 from CST. CST suggested also to glue in a wooden plugs where the wings meet fuselage to protect CF tube from crushing.
CST tube weight 27 grams per ft so 26 inch should weight 59 grams. Including plug glue and tape I should around 2.5 - 3.0 oz. Still good weight saving.
RysiuM