[NTG-context] Any PPCHTeX users out there?

Hi. Since the PPCHTeX mailing list (ntg-ppchtex@ntg.nl) seems to be inactive, I'm posting to the present list my PPCHTeX question. Suppose I have the following PPCHTeX code: \startchemical \chemical[SIX,ROT2,B,R36,RZ6][CH_3] \chemical[PB:RZ3,ONE,Z05,SB5,EP37,PE][O,H] \stopchemical . Now, if I want `size' to be `big' but `scale' to be `small', I just type: \startchemical[size=big,scale=small] et cetera, but then I have a problem: the two couples of electrons that are above and under the oxygen atom come much too close the oxygen atom, they come onto it. Is there any PPCHTeX user that knows if it's possible to avoid that, and how? Thanks indeed, Rodolfo