Hi well back from town they had three grades of nylon Lycra how to describe them grade 1 rubbish,grade 2 not so rubbish but thicker a bit heavy ,grade three with a £6 pound per metre price supper heavy and easy to sew ( famous last words ) so,here's my plan note pic below
A/B are as you guess top and bottom of scope
the three verticals lines are the truss tubes
parts ,1,2,3 camping matts cut down to each size, I,found 10" of,camping Matt does not un-balance the scope
my plan is to glue Velcro to part s 1 and 3 along the dotted lines on pic
I will have a 2" band with no Velcro. ( subject to trail and error this may turn in to 3 or 4 pieces)
with the black Lycra will sew Velcro top and bottom lenght of this 29"
This may not work out but I have nothing to loose I will not cut the Lycra to size I will most prob lightly sew it on for test purpose as if the 2" camp matt does not keep it from of the truss tubes and interfere with the light path
Pat