They definitely look smaller .
I am woeful at remembering how I mod stuff . I think I just halved the scale .
The edited GR2 scale wont have 0.500000 , it will have 1.000000 when I reload the file with the GR2 editor . But the trees will be half scale of the original . If I mod the modded half scale trees and make the 1.000000 into 0.500000 again they will be half the scale again and be quarter size of the vanilla size maybe . You get the gist of it .