@Bird: so just to clarify this: you took the folder from Desperauxs mod and overwrote its contents with the files from Ranwers mod here? you did not use the rest of Ranwers folders? or did you use them as well?
Yes. I only used the "runway" folder contents from Ranwers' mod, as the JSGME version from Despereaux's version only had a "runway" folder in its main folder. It only covers the "planned" grass runways, and with Ranwers' runway files I get the short grass, activated with JSGME.
*Edit: I just went and looked, and for the purpose of trying this the first time I only did the #WAW3 folder in Despereaux's version. I'm rarely playing the other modules, but I would suppose you could overwrite the runway files in the other module folders with the same files if you wanted to.