Hey Rick
Aeroclub used to sell packs of assorted plastic strut material - I think it may have been produced on the Contrail machine. I used to meet John Adams of Aeroclub regularly at the UK shows (but of course haven't seen him for a couple of Covid years.) Last time I saw him he told me the source had dried up - maybe the machine was knackered - and, If I wanted any, I should buy them - so of course I bought a couple of packs.
Aeroclub is no more, but I think John still sells some of his old stuff, so he may possibly have some of the strut material left. Not sure where you are based but, if UK, he will likely be at Telford (if health etc OK) next week, so you could keep an eye out for him if you're going. Otherwise I think he is active on the Britmodeller forum and maybe worth a query?
Of course the plastic stuff is not in the same league as the brass Strutz packs, but I stupidly sold all mine off when I left the hobby pre-Millennium - not realising I'd be back!
Good luck
Sandy