Perhaps with the now relative "abundance" of WnW 32067 kits, you might be able to buy/trade for multiples of decal sheet C, to cobble together enough for the Tripe.
I'm sure that not every purchaser wants to build Thuy's or Berthhold's machines, especially since by purchase of Sprue E/G (BMW IIIa) from 32031 (available from WnW), one can have late-war D.VIIF, for which Pheon offers some yummy markings options.
Hth, Rob