[phenixbb] some sort of occupancy refinement

question is after the setup here : i have a ligand with multiple conformers. i gave each conformer a different chain label. refining occupancy for the overlapped parts kicks that part out of the density. i have remove_selection for the parts that are 1.0 and they seem OK. a single conformer stays in the density. i tried starting with and without site or occupancy refinement, no help. i do not want group occupancy refinement b/c some parts do not overlap - i.e. they "should" be occupancy 1.0 -- i tried it anyways with constrained_group =... to check. is the chain label an improper way to do this? -bryan p.s: Happy New Year with Blue Moon Eclipse (~10degW->180degE long. eastern HS)!