Then the sidepack would have to be a separate joint part which is not named in the conformee, and as stated before. And the same problems would occur with straps and hoses connecting conforming parts with nonconforming parts. After all possible patch-ups, it seems that Poser 5 needs special code to handle this sort of model where a model is a mixture of conforming and nonconforming parts. It is not only with the Salvus; I have made quite a number of models (scuba gear, a flamethrower, etc) which have a backpack harness that I would liked to make as a conforming garment instead of as a cat-o-nine-tails of several straps each of many parts with the curve property, fiddly to pose and making the CR2 file huge. Thanks for all your help. One solution might for it to be possible to attach ANY segment of an IK-chain (not only its goal) to a particular polygon face or vertex of another model; then that part must stay with that face or vertex.